well both are about the same. I have the "yellow" one; more like it's orange. I can't be for sure which one is better. The blue one is the older model i believe and people rave about it. Most of the complaints about the yellow one comes from people who had the blue ones before. They mostly complain about the lack of Macro keys on the left. And to be honest i have never used all the Macro keys. Other wise it's pretty good, i think. Doesn't make loud pronounce clicking noises. Makes more of a soft click noise. The lights come through well even on the lowest setting. So if you have the money to burn on it go for it.
I have the orange one and love it, but both are great. The orange one is a bit smaller, so if you don't have a huge amount of desk space, it's probably the better one to get.
I'd go for the blue one because of the adjustable screen. Other than that I've also never nearly used all it's macro keys. But I am not sure though if it is still produced? I thought they discontinued it?
