I returned the Swissonic mentioned earlier, and went big with an FP-90. The key feel is great, triple sensors let you replay a key after hardly letting it rise again at all. Very expressive. Now I'm even more broke. But happy.
I have a new appreciation for modeled pianos now. Previously, the expressiveness wasn't too impressive for me. I put that down to not having the right keyboard for it. Though as always, the modeled instruments lack something that the sampled ones have. But the sampled ones also lack the sheer variety of sound and expression control.
I'll probably wind up getting Pianoteq someday which previously I found too off sounding compared to the sampled instruments.