I was thinking about MIDI but I have decided to have a stand-alone piano, not occupying a computer. Also I would like an electronic piano with keyboard which is more alike real piano. Thinking now about Korg SP250
http://korg.com/Product.aspx?pd=134 I tried it alive and I liked it a lot. Yamaha didn't impressed me much.
The price for Korg SP250 is low as $700. Here, in Russia, it is more expensive though - $1100. I wonder if I can order from the US or Europe and how much will it cost to ship to Russia.