I have been using it semi-professionally for almost a year now.
On the positive side, it has excellent build quality with relatively low weight, an amazing battery that can last through an entire wedding if you are brave enough because it gets heavy in your hand after a while, the Dji app with some pre-set movements, mobile control, and instructions for balancing. It also has a built-in tripod, but it can also be screwed onto another tripod.
On the negative side, it is a bit difficult to balance, especially if you haven't dealt with it before, but it can be learned. Also, the handling to achieve precise movements requires some hours of work. If someone wants to do amazing things as soon as they get it, they should have patience. It's around €250 if you can find it, and I think it's the best choice for a medium-sized camera, it can hold up to 2kg, I never pushed it to its limit. I have used it with the A7iii and the Sony 35mm lens, and even that weighs almost a kilogram. I am attaching a link to a video taken with this setup.

https://www.youtube.com/watch?v=ipMeVF5qeGQ
P.S. It's my daughter in the video, so be careful with your comments!

Overall, it is a good gimbal. However, its handling is not easy at first, especially for someone who is dealing with it for the first time. It is relatively heavy but reasonable, as it can support up to 2 kilograms (with my camera, it weighs 2.2 kilograms). It is not suitable for heavy DSLRs, but you wouldn't get it for a mobile phone either. It is suitable for medium weights. It can be tiring to use with one hand for a long time. Also, with the modes it has, it will cover the amateur quite well. DJI provides significant help with videos to learn it, both in terms of balance and handling. The battery is very good and lasts for 8 to 10 hours, but I don't end it to verify it for you. Communication with a mobile phone through the DJI application is very important. It is important to match it with the camera's compatibility, so that you can operate the camera from the gimbal. Refer to DJI's website. It is a quality construction and will satisfy anyone who chooses it, knowing the conditions I mentioned. I hope I helped those who are interested in something like this.

Purchased in August 2019 and after several battery drains, I highly recommend this stabilizer with a learning curve of at least a year. The official specifications and features are accurate. We tested it with various cameras and lenses weighing up to 2+ kilograms, exceeding the official recommendations of the manufacturer, DJI. Regular updates are available, and the mobile force feature has already been introduced for Android. This feature follows the movement of your mobile phone through gyroscopes (hand movement). It can be adjusted on a scale from 1 to 100, ranging from very slow to very fast or smooth to abrupt movements. All parameters, including motor strength, can be customized based on the type of camera being used. For cameras without stabilization, such as older DSLRs, there may be slight noticeable shaking with a standard zoom lens, but it works better with a wide-angle lens. For example, the a6300 with the kit lens (16-50mm with stabilization) requires calibration (off mode), then turning on autotune and recalibrating while walking quickly. With a full-frame prime lens (50mm or 85mm without stabilization) on the a7iii with IBIS on, most shots are stable, but be cautious of sudden movements to the right or left, as the IBIS can be limited and cause distortion due to sensor space limitations. Additionally, when connecting the cable from the Ronin to the camera for basic functions like start/stop, the body stabilization is deactivated, not the lens stabilization. The basic principle is to use the stabilizer for tasks that cannot be done by hand and require continuous movement, as the catwalk movement is sometimes unavoidable (slight tilt). There are several accessories available (monitor, large external microphone placed outside the camera, smartphone for the app, etc.), but they can be tiring for prolonged use. The new camera plate works wonders, especially if you are in a hurry. You simply attach it to the same position where you calibrated it, with the advantage of it being smaller than standard Manfrotto plates. Alternatively, you can mark the points where you calibrated it with the corresponding equipment (after properly balancing the camera with all its accessories, turning it on, and immediately performing autotune to measure the strength of each axis, then calibrating). However, the joystick mode is the best feature, allowing you to connect to the camera as a monitor using a second mobile phone with Wi-Fi or Bluetooth. This way, you can immediately see what you are shooting or adjust any necessary settings, as long as it is supported by the app. For example, with Canon mirrorless cameras, there are many possibilities and a strong connection, although it consumes battery power. Sony cameras are similar, unless they use the Z battery model. With the joystick mode, you can position the stabilizer wherever you want, whether on a tripod, on the floor, or on an electric rail, allowing you to remotely control the entire system for any purpose or need. Let's not forget that it has a robotic principle, which seems to have significant differences from the first gimbals. Cameras with good autofocus can be used with the "simple" Ronin (older cameras can be used with manual fixed focus, but be careful to ensure correct focus and avoid blurriness).
The servo zoom of the lens supported works with a 2nd mobile - the 1st mobile always connected via Bluetooth to the Ronin for any control or fine-tuning - or with the follow focus wheel. It has worked almost continuously for 10 hours to drain the battery with a7iii and 28-70mm kit lens (and 8 hours with the same camera with Sony 85mm f1.8 and 35mm fe 1.8)... these guys and only when you get something and try it out thoroughly, then only you have an opinion about what you are holding in your hands, I hope I helped..
1/12/2019 and another update, the remote control (among other things) from Xbox and PS4 was added as a remote control for the Ronin!! .. DJI warranty..
-25/12. I put the Canon M50 with the 15-45mm kit lens on the Ronin with precise balancing (i.e. about a quarter) and I found my joy... I was running, turning sharply, underslung, flashlight mode, fpv it didn't understand anything and I carefully watched the whole footage, it didn't move, the update did the job... the touch screen is the most functional I have tried, it helps you in shooting with the gimbal like nothing else.. (and the Canon app, but 2 mobiles, a camera, and a gimbal to control are enough..)
-23/1 it works more comfortably with relatively heavy sets, e.g. a6300 Sony with kit lens 16-50mm and below 8 to 7 degrees you have sharp movements due to cold, the motors do not warm up well and it becomes quite nervous even with a heavier lens. With a Sony full-frame or DSLR camera, i.e. a camera with a total weight of over 800g with a kilo, it seems to work better.
It has been updated for other cameras (e.g. Fujifilm) with additional functions.. (shutter button, etc.)
Now, after 2 years together, I conclude that it has many positives and with enough experimentation, you can create proper content.. good work to everyone!
(Also for Event Streaming where most people do not aim, it is a must as with a set of over a kilo, it does a very good job consistently.)