I've owned both the Poker and the Pure, and I like them about equally. If you're used to the function layer on the Poker, you'll have to relearn the key combinations for the Pure function layer. I sold my Poker recently to help another member get a Poker with ghetto Reds, and I received my Pure with Browns right about the same time. The transition for me was an easy one. I just wish the Pure had kept the WASD as cursor arrows on the function layer. I will be getting another Poker with Browns from p.s. when his shipment of them comes in. See thread
here. Oh, and the other difference besides the backlighting is the 1.75 right shift on the Pure.
I swapped out switch types several times on my Poker, but I won't be doing that with the Pure. Would require desoldering all the backlighting LEDS in the keyswitches to get the housings apart.