Here's my opinion...... I've got a Triton full size. Its got great feel and everything and the piano sounds are nice enough. The sounds in it are amazing.
The thing about keyboards is that they have different uses. Nomatter how you try to get around it, the triton is a studio synth. It can do absolutely incredible things that I haven't even figured out yet

But it all depends on what you're looking to do.
The fantom and the Motif are often prefered over the triton for stage use where as the triton gets a whole lot more preference in the studio and seemingly with black gospel style music for live performances because its got some great organs and a really nice wurly sound.
Anyway, I like pianos. If you want a great piano playing keyboard I would suggest the Yamaha P250. It is awesome, its got an amazing grand piano sound to it and it has speakers on the side that cause an amazing vibration and resonance that makes you feel like you're playing a real piano. Then just buy some module to go with it from roland and get all the neat pads and sounds you want for afew hundred bucks more and that should last you for a long time.