Hi Rory,
I have used Yamaha P-85/95...very good piano sound, great 88 note graded hammer action, built in speakers, optional stand and three pedal unit. No styles, but you can mix two sounds...piano and strings, for example.
Very good value for the money...it also has dedicated MIDI ports in case you want to sneak it away and use as a controller <grin>.
When I have one here, I use it as a MIDI controller for my arranger.
Good luck,
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.