Well, first of all it depends on tha specifics of what you want to control?
*Is it jus yer drum section?
*Or, is it your drums as well as your basslines, keys, etc.
Right now i use a Ox 8 with Reason 2.5 and im very satisfied with it...
Its perfect for simple tasks which is all i need with reason.
Preferably, i would like to also have a *MPD-16 as well tho - just to prgm my drums, and then everything else on tha OX 8...but as usual im broke as a joke so keep dreamin right!?
Anyways, you can consider a few alternatives:
*Oxygen 8 keyboard by M-Audio
*Ozone Keyboard by M-Audio (includes its own sound card and has more controllable knobs.
*Edirol makes a nice one, but i forgot tha name??
*Akai Mpd-16 (for prgming yer drums, it has 16 traditional velocity sensitive pads to bang yer shit out on)
Theres a ton of em' out there right now, which are generally all tha same, but if yer on a budget you might consider tha Ox8.
Steezo