I would look at two Yamaha models, the P120 or the P250 depending on your budget. Great action, great Piano sounds, and the other samples like Rhodes and Organ and strings are pretty good.

The other option you want to consider is to purchase a really good midi controller with weighted action for your classical piano skills then purchase a sound module like the Motif Rack or Triton Rack. This would give you many sound options with the key action you desire.

Hope that Helps Laura....Good Luck
Al