I'm using this one:
http://d1b4j0je2zat9y.cloudfront.net/17364/product_top3/646x480/16006183
and have been for the past 3 years, it's a decent keyboard but the keys are 'cracking' which makes the LED back-lighting shine through the entire key, instead of just the letter. It's not a major issue, but it's getting quite annoying and worse overtime. I would love to switch over to something mechanical, but eh money.