Very good review of the RK96. I bought mine about 8 months ago and I love it. I´m using it to type this. The only changes I have made to it have been that I added polyfill to the bottom of the case to give it a fuller sound (it´s very easy to open up) and since it has north facing LEDs, I got nice set of shine through keycaps and the RGB looks amazing, specially at night. But it´s bright enough that you can see it clearly during the day. For the price, it´s very hard to go wrong with the board.
No they are not shine through. I discuss the keycaps from the 4:30 mark to 5:56 including that the legends are all yellow and thus do not allow RGB to shine through them.
That’s a really tough call… I think I use the RK96 a bit more regularly because the linear switches are lighter and quieter while still satisfying to type on. But I love the custom purple tactile switches on the K656. They’re definitely my favorite switch. They’re so thocky and the feedback is awesome! They are a bit heavy to game with especially for long periods of time and they’re loud which is more of an issue if you game online with friends. If I’m really in a typing mood I’ll switch over to the K656, it’s excellent for that.
I've also enjoyed my one RK Royal Kludge keyboard that I have purchased. I own a RK68 and it works phenomenally. One of my favorite keyboards I've ever owned honestly. The only other competitor is an IROK FE75pro. I recommend upgrading the stock switches on both though.