Hi, I'm planning to buy an Akai Apc 40 (http://www.akaipro.com/apc40) to use with resolume Avenue. Has anyone tried one or has an Akai apc 40? Is it solid, does the knobs and pads are easy to use (smooth, ...)? Currently I'm using a Korg MicroKontrol, but the apc 40 is better for resolume avenue I think. shout please thnx!