The best I have tried - and I have tried plenty!
COMPLETELY silent. The presence of the protective film is unbelievably convenient (professional use) - so much so that I'm thinking of getting another one as a spare. The triple usage capability (Bluetooth, USB, cable) is a lifesaver. I liked it so much that I got it as a gift for a good friend too!

Excellent product. Low profile with a very nice feel and sound when typing. It looks exactly the same as the Logitech MX keys but its price is 1/3. Also, much better feel than the low-profile keyboard from turbo-x even though they cost about the same. Absolutely satisfied!

It does not have the ability to be tilted (it does not adjust the height) like most keyboards (it is always flat). Other than that, it is a quality construction and connected easily.

I got it for work because I wanted something quiet and it is the best.

Low profile keys, super easy connectivity with many devices, zero connectivity issues (signal loss, etc.), very good build quality.

I already had 2 other Keychron products so it was an easy purchase for me because their quality is unmatched compared to other similar products

Very good for typing for those who want the low profile. It took me a little while to get completely used to it, it is silent and has quite a few shortcuts which I don't use though. Buy it without fear, especially at this price it is the absolute VfM.

Nice keyboard. Good key press. But it only lasted for a year. The arrow keys do not work properly and it changes letters and lines on its own.

Convenient, perfect size and very good battery life. I use it daily for many hours due to my profession and it is the best thing I have bought lately

I have had it for a few days and so far everything is good. In terms of typing, it is quite good, perhaps comparable to the Logitech MX Keys. Of course, generally speaking, the Logitech one is a bit better. When I received it, I had a small issue with rollover. If you pressed key combinations multiple times, it couldn't register the letters as it should. This is partly normal due to the nature of the keyboard, as it is not mechanical but membrane. The firmware was at 1.3.2 and after upgrading to 1.3.3 the problem was solved. The update process was not so easy as Keychron's web software had incomplete instructions on how to do it. If you want to update, it's better to go directly to Keychron's website and see how it is done there. Unfortunately, I think you will need a Windows PC for such a task as some drivers need to be installed for the update to take place.

Nice, easy to use and works perfectly both wired and wirelessly. However, its drawback is that it has a very small tilt and I had to add feet to it myself

After daily use I am very satisfied. Good feeling on the keys, reminiscent of those of a laptop. The battery lasts over 1 month.

after a year of use, many of its buttons stick, either appearing as if they are constantly pressed, or not responding at all.

If you need something that isn't flashy, is low profile, and you don't have the budget for the expensive Logitech ones, then I highly recommend it.

Very good and very cheap for what it offers and especially for its aluminum construction.

Good value for money. Got it for a linux desktop. Good connectivity, smooth feeling. I'll see over time. I am happy I don't see the stupid windows logo on the keyboard anymore.

It is excellent, especially considering its price. Very good construction. Perhaps the fact that it does not have an incline is a minor disadvantage for users who find that helpful.

Owner of 2 MXkeys (office / home), I was looking for something similar as a backup. I was not disappointed.

It is clearly worse than the MXKEYS but light years ahead of other cheap keyboards. There is nothing better in this format at such a low price.

Beautiful, chicklet keys like an expensive Windows laptop, no noise, good travel, all buttons in ergonomic positions, comfortable connectivity with all three methods, plus the fact that you can modify the Keychron layout from the browser.
The only downside is that it definitely needs feet, the angle it has is not enough for me (I printed them myself, 3D TPU).

Overall, I have loved it.

I have no words for this particular keyboard — kudos to the company! Anyone involved in word processing, article writing, or authorship, like myself, and generally with long hours of typing, I highly recommend it without reservation.

Very good for its price. Ideal for office use. 4 stars because it does not have height adjustment.

for now the only problem I have is that it doesn't have legs to be tilted and it tires me

Nice overall. I don't see it connecting with Linux, so I used the dongle. The battery is good but doesn't last as long as Logitech's equivalent. Generally VFM though

Nice keyboard, with a nice feel when typing. However, it could use "feet" to be raised even a little.

The best choice for minimal selection. Works perfectly in a Mac environment. Very good battery. At around 40 euros, which I bought from a well-known e-shop, it is definitely value for money!

Excellent keyboard in its use, connects very easily, 4 stars though because the caps lock light does not turn on, resulting in sometimes having to search for whether I have uppercase or not.

Excellent response. The noise of the keys is pleasant (it doesn't bother me, silent would mean the keys are soft with a bad feel). It doesn't have lighting, but it connects either with its own dongle or via Bluetooth. The spacing of the keys is pleasant, I might buy a second one in case I lose the first. The MX Keys from Logitech is similar. Follow up after 6 months: it broke, a pity. Of course, I used it for at least 3-4 pages of writing per day. One key got stuck and now it's useless

Silent, comfortable, plug n' play on linux (open suse) - professional use - code

Edit 2 months later:
Without wrist rest it causes pain in the wrists