(over one year late reply...)
I'm a scissor-switch fan and don't like membrane keys, and I'm in the quest of finding the best keyboard for me. You might have found one already but googling "scissor-switch keyboard" will find lots of web pages.
So far I like BTC 6200c best with stable key feeling but it's not a full keyboard as some Fn keys are assigned to Fn+Arrow keys. I'd like to try BTC 6300 (full keyboard) in the future but it seems discon'ed. Kensington SlimType has looser/more instable feeling on keys than BTC one in my opinion.