I have a Keylab, it's not that great, and has a broken key which i've been waiting months for Arturia to respond to support requests for.
However if you are using Cubase, Bitwig, Logic or Reaper, then I highly recommened the Nektar Panorama P6!
It's deep DAW and plugin integration (with those four DAWs, and many common plugins), big colour screen and motorised fader makes it superb. The keybed is as nice as those on my Nord and Moog hardware synths as well.
I use the P4 as my main controller.
