Lin, I bought a Axiom61 about a month or 2 ago..I thought it was the best all around controller, including USB powered..It has many settings and controls..The key feel was the best that I tried..and full size keys..It also has after-touch..
4 zones is also another plus..

I decided to sell it because I was use to 76 keys and 61 just wasn't working for me...

Another negative for me..I had a lot of problems trying to load the Native Instruments preset for draw-bars...I use the original B4, and maybe it was designed[B4 preset] for version2..Although I don't think so..