i was talking to my mate who bought the steinberg controller a few weeks ago and he said it will only work with cubase products nothing else he tried it with ableton and it wouldnt work..if you get the steinberg controller it is pretty good and you get the cubase ai4 software with it too ..the jog wheel controllers id avoid there only for scrolling around the screen not much in the way of faders or any other features except the odd basic ones ..the behringers are cheap enough or you could get the korg nanos if you want faders or the nocturn if you want to control plug ins as well to get a good set up id buy the nano fader controller and the nocturn it will cost just over 110 but they will work with any sequncer you have and will be a good easy to learn set up ..
http://www.dv247.com/invt/52990/
http://www.dv247.com/invt/48363/