I have a 45g FC660C, so yeah, I can compare it to genuine Topre. It's definitely a bit less snappy than genuine Topre, but in my view that's not a bad thing. The switches on the RC930 are a bit heavier overall, but the weight is pretty uniform throughout the keystroke with it a little heavier towards the top, whereas the weight of the FC660C switches are very concentrated towards the top of the keystroke. In other words, the tactility in the genuine Topre is more sudden, and feels akin to popping a bubble, whereas the tactility on the RC930 is more subtle and "gentle," but the weight is definitely still there. After using it for a little bit I'd say I actually prefer the RC930 to the FC660C, but that may just be because I prefer heavier switches.
The sound is amazing. Overall the RC930 is very quiet, but you do get a nice, dull "thock" accompanied with a soft "shh" sound on each keystroke. The stock dental banding prevents the harsh "click" that my FC660C has on the upstroke. I really enjoy it. I almost enjoy the sound of the board more than the feel.
The stock keycaps are also surprisingly decent. They are ABS and I'll end up replacing them eventually, but they have a pretty nice texture and are fairly thick.
The backlighting looks nice and is customizable without software, but the software allows the keyboard to use even more colors so it's highly recommended to get the software from RK's site.
The case is serviceable. I don't really like the texture of it, but its construction is solid.
The cable looks nice (it's braided red and black, like the picture) but is unfortunately not removeable without mods.
I own a Poker II with MX Browns, a CODE TKL with MX Clears, and the aforementioned FC660C with 45g Topre, but this RC930 just overtook them all as my daily driver. For the price the RC930 is an absolute steal.