Dave Smith Instruments SYNTHESIZERS

I'm looking for opinions of those who use 49 or 61 key controllers.

I'm searching for a controller with aftertouch and playability that will last more than a year, posessing durability and doesn't feel like a CME-UF series(had one, sold it, completly un-impressed with it, not going to get into it) but not expensive like a new Studiologic controller, asking much I know.  
Durability of the keys are more than my main concern, followed by funcitonality as I'll be using it live and only mainly using it for playing, not knob turning.

I'm considering:
- Edirol PCR800 (bad online reviews about durability)
- Akai MPK49
- Novation Remote SL Compact (49 or 61)
- M-Audio Axiom 61
- Yamaha KX61 (can't find any good reviews)
- or a used Kurzweil 2000 / Studiologic (since I own a K2500 and its been rock solid for over 10 years).

Thanks in advance,
Tyler.