Optically it is awesome. Suitable for office use as well. The feeling on the keys is simply silky.
The software is the least bad I have seen, not perfect, but at least it doesn't crash nor has microscopic characters. It uses almost minimal resources from the system.
The wheel for adjusting the volume has immediate response.

The disadvantages (so far):
1. The gap between the keys is quite big but can be gotten used to.
2. You can't choose a real white color on the keys, but something towards cool white.
3. It has "mute" for the lighting, but it doesn't include the 3 media keys.
4. The price in Greece is outrageous, get it from roccat itself for less than half the price, with free shipping.

I bought it from this specific store due to its low price. Awesome keyboard, excellent construction, easy-to-use program. Not a perfect rating due to the delivery delay, something I expected from the comments about this specific store. If they manage to fix this issue, they will be perfect. I will purchase from this specific store again as long as I don't need the product immediately.

update 15/11/2022 Last 2 months. Quite a bit of double clicking and chattering on the keys. Several times it doesn't register the typing (usually have to correct the text). The keys were removed, cleaned with air and alcohol. Slight improvement. I can't find - at least not easily - keys to replace the problematic ones. The keyboard is used in an office (not for gaming). Rating is average due to the above. It may have been specific to this keyboard.