I've been using this controller keyboard for a good while now and have zero regrets. It's hefty, dependable, has the best tactile feel for sliders, pots, keys and pads and is very reasonably priced. I use this with Propellerhead's Reason software but it works with all of the top music production programs on the market. There are default global settings built in, but you can also change, map and save your own settings to whatever you like in your program. I've seen the newer Akai MAX series and I can just imagine those touch sensitive virtual sliders glitching out or something... not to mention I like the tactile feel of real sliders.

This keyboard can be purchased here:
http://goo.gl/LAa7Vr

The newer version is here:
http://goo.gl/eTVqZd

I apologize for forgetting to use my pop filter on my mic... I also tend to jump around without much planning in my reviews, which people seem to like so I guess that's my trademark. Either way - I hope this demo helps you decide in what controller may be best for you!