Pretty good mouse, but wouldn't call it great. Problem with the XTD Optical is that it has some smoothing over 900dpi, it's not very noticeable if you aren't a twitch gamer who plays above 1600dpi, but it's there.

The other qualm that I have is the scroll wheel, I found that it is quite inconsistent between different batches. You either get a very mushy scroll wheel where it is difficult to feel the steps when scrolling or you get one which is tactile and rigid.
I don't know if Roccat has fixed this issue or not, but it certainly was a turn-off for me back when they released it.

Switches are from Omron, don't remember which model though. But IINM, it's the usual D2FC-F-7N which requires very little force to click. Not my personal favourite to be honest, always had issues double clicking due to heavy fingers lol.