The Motif ES would also be my choice. It is a little less intuitive to learn, but sounds better than the Triton (or the Fantom, based on my very limited experience with a Fantom). The "real" instruments on the Motif, esp. the electric pianos, pianos, Clavs, etc., are far better than the equivalent on the Triton.
Dare I ask if you've considered the Oasys?