Rolandfan,
MJB is right.. The only difference between the 60 and the 80 is that one is 76 keys and the other is 61. As far as the XP-30 is concerned. That keyboard is primarily for performance and studio work.. It does not have a sequencer nor does it have the large screen of the XP-60/80. However the XP-30 is loaded with sounds, and is a great performance keyboard. The XP-50 is quite similiar to the XP-60/80... The 50 doesn't have the sliders, smaller screen, less memory for recording, and I think less MB's to the sound quality.. The 50 isn't a bad keyboard, but I would take the 60 or the 80 over it any day.. Now the Fantom is the newer model.. It's an upgrade from the 60/80.. The sound quality is better, more room for sequencing, eaiser navigation, sleek body design, new screen.... However it only comes in 76 keys and I think roland dropped the semi-weighted keybed from the Fantom.. The 60 and 80 are semi-weighted and the Fantom has synth action, which isn't bad, but have a lighter touch to the keys... The price of the XP-60 is well worth it and I wouldn't pass that up.. That is depending on the condition of the board..
Squeak
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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.