I recently bought this. But I am not using my personal computer much so can't give much of reviews.
There are different models of surara. I have got the red switch one, I bought this locally, whose colors can't be set with software.
I think the newer versions come with brown switch.
The keyboard is very heavy and looks sturdy. TBH I went to local shop to see Cosmic byte one and ended up liking this one. Also yes, the red one I have doesnt have perkey RGB, neither could I found any other keyboard with perkey and red/brown that time.