If you are interested in piano sounds only... with a few organs, strings and choirs, go with a stage piano, not a full-blown synth. A stage piano will most likely be a little cheaper and will concentrate more on the piano sound and feel than an ordinary synth will. Try the Korg SG ProX. Also the before mentioned FP-9 and P-80. Also if you're not interested in it being portable... look into a digital piano. They have some great sounds and are probably the closest you can get to a piano.