I purchased this kit because I wanted the feel of a custom mechanical keyboard without breaking the bank. On the black kit, I added Boba U4Ts on alphanumerics, Novelkeys Creams on the modifiers and the one Alpaca Linear on the space key (it's actually just a key as I use the split spacebar module). Finished it off with Durock stabilizers and Domikey SA Gas Attack keycaps.
Needless to say, the keyboard looks beautiful with the black and purple theme. The white plate lets the purple backlight bleed through (keycaps are opaque of course) and adds to the look. However the sound left much to be desired, as there is a lot of empty space inside the keyboard. I decided to use neoprene to fill the space and that made the sound heavenly. So much that I'm tempted to type more and more on this.
It also checks all the other boxes. The two-level kickstands are really useful (I rest my elbows on the table so prefer a really high profile). The bluetooth connectivity is also pretty good, and apart from a couple of times where it has dropped with my iPad, there have been no issues whatsoever. Having the numpad is a godsend as I need to work a lot on spreadsheets. But the split keyboard takes the cake: I have enter, space, and control keys right under my thumb, and I can't begin to describe how much it has helped my productivity. Really happy with my purchase!