Fantastic keyboard. It's a pleasure to work with. It is quite heavy and does not move at all. I also combined it with its wrist gel and it's perfect. Highly recommended for programming.

Disappointment. 160 euros I paid for a piece of metal is way too much.
It has no tilt. The caps lock and num lock indicators are only visible in the dark.
I won't say anything about the feel of the keys. I doubt that those who rate it positively have even seen, let alone touched, a decent keyboard.
Lights on a box.
It works as a paperweight, but I've seen cheaper ones.
In the end, there is no better keyboard than the IBM type M or F.

Good build quality (quite heavy but I don't consider it a negative)
Nice and linear sound (with the Red switches it is not as loud as in other mechanical keyboards, so if someone wants a louder sound they should go for Brown or Banana)
3 connection methods (dongle, bluetooth, wired type c (the cable is included))
Can be used on Windows and Mac (includes keys for both operating systems)

A negative I would say is the lack of backlight on the keys but I didn't find many mechanical keyboards that have it so I overlook it since its lighting is sufficient even in a dark room
So far I haven't found any other negatives, if needed I will return.

One of the best keyboards on the market.

The only negative is that the space bar is wobbling a little bit. At this price tag I wouldn't expect such an issue. But overall, really one of the best. And I have tried Razer magnetic, LG 815, Ducky blue switches, generally many high-end keyboards. It's the only one that I'm truly addicted to typing on

fantastic keyboard, top quality construction with metal underneath, it shows even from its weight, it is almost 2.3 kg, the feeling is premium as it should be for its price, the battery lasts a week with the LEDs on and gaming use, the connection options are extremely convenient whether you want it wired or want to plug in the receiver or connect it via Bluetooth even to a mobile or another device, no issues

Simply amazing. I didn't expect it, it's from the future.
On the downside, even though it's RGB, it doesn't have shine-through on the letters. I didn't expect that because I didn't research it. At some point, I will buy OSA Side-printed Shine-through keys because honestly, I see this being my keyboard for the rest of my life.
On the downside, it is also extremely heavy. Aluminum. But those are the only negatives; other than that, we're talking about the perfect product.