I use the Korg CX-3
I like the feel, I like the sound. The authentic shallow waterfall keybed is pretty hard to simulate in software!!
Lots of parameters if you really want to get in there. The Modeling Amp simulations are very cool also.
Being able to adjust the transition times between fast and slow is way cool if you are in the Studio and want to make the transition last exactly one measure...
Previously I had used the Oberheim/Viscount OB3 squared, but the Korg to me is much more on the money.
Probably you are wondering why I didn't get the BX-3 with both manuals? If I really need to have two manuals at once, I can just MIDI up what ever keyboard the CX-3 is sitting on and access the Lower Manual sounds that way.
That's my two cents.