A photo of Skrillex's studio from this [blog](http://technoproduction.blogspot.com/2012/01/skrillex-studio-setup-then-now-rundown.html) reveals he uses the Akai Professional MPK49 keyboard as his MIDI controller, although he doesn't always feel the need to use it. He has said "I’ve gotten very quick at drawing everything in with the trackpad. I prefer it that way actually."more
This is a great midi keyboard, but the pads do not work that great. I saw on a forum where someone had installed their own pads, and they said that they work much better. Also, I wish the knobs had lighting so I could see how far they are turned up. All in all, it is a great keyboard for a desk studio. Not very portable, but I plan on buying the mini version soon.
I love having a full piano in case I just want to jam out and not have to worry about switching octaves, and the drum pads/knobs are really nice. It also MIDI Maps right up to Ableton Live so that is nice too!! Love it.
I picked up this UBS / MIDI controller to replace an older MIDI keyboard. This has a great feel to it and the buttons are very well placed. When working with Abelton it is amazing. When working with FL Studio, I had to dig around the net to find some mapping. Although, mapping is pretty easy in FL Studio. The unit has a good weight to it and I haven't taken it out of my home office/studio. The one negative review that people tend to have about this controller is the low sensitivity of the 12 gray pads. While I have noticed this a bit, it has not been too bothersome in recording or performance.
I got this MIDI a few months ago and I've been nothing but happy with it. Akai makes a really durable product. Also, the 49 key gives plenty of octaves for your production. Faders and pads also come in handy too!