I agree with Diki... IMO the best onboard arranger piano preset I've heard is from the G-70... The G-70's piano shares it's beautiful sound from the Fantom X's piano. So you're getting the piano from one of their top synths. You want to FEEL and HEAR a great piano patch.. Play the X8.., those weighted keys and that sound were a match made in heaven.
Roland's also trickling this down to the lower line too. That new GW-8 is supposed to have some great piano patches as it's using a sound set based on the Fantom/SonicCell.
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.