Any recommendations on a good cheap Digital Piano ?

Just looking for a cheapish Digital piano around for �300 - 480 that I can take out gigging, MIDI use for music production and a nice in built sample library. Any recommendations for the best one for the price range, let me know please :-). One more thing.. I was wondering if the Yamaha p-90 or p-85 are any good compared to other Modules such as Casio PX-130 ?