Wow.... big choices:
PSR 9000 - Large, heavy, expensive, but feature laden. Great vocal harmony and insert effects for the sounds. Hard drive optional. Speakers are not real loud, but sound great. Audio ins with a very special "loop" feature that allows the internal speakers to act as a monitor for your whole setup and still have individual mixer control of the keyboard. This has the most stuff in one package, but the package is a BEAR to transport. 50lbs, and very wide(deep)
Tyros - No speakers, lightweight, expensive, and aslo feature laden. HD also an option. Vocal harmony included. This years top entry from yamaha.
PA80 - Smaller package, HD optional, but gives you TWO sequencers with a DJ style fader. Harmony also an option. Great sounds, but stronger learning curve than Yamaha. Drums are among the very best, arrangements have 8 parts and are sometimes 16 measure patterns. Lightweight, 4 outputs, audio ins, completely REprogrammable. No use for Polkas? Take 'em out and fill that spot with something else.
Triton - Not an arranger. No speakers or mic input. Doesn't belong in this comparison, because it's a totaly different animal. Popular workstation that inspired the creation of the PA80/60. Hip Hop artists seem to love this one. Complete workstation.
VA5/VA76 - Identical sound sourse & rhythms. VA7 adds aftertouch, zip drive and a few more goodies, but they look, sound and act the same. Touch screen, not alot of buttons - difficult to navigate in a high pressure situation. Lightweight, but HUGE case. Speakers sound very good, but no input suitable for singing live. Audio inputs to sound system. The mic input is meant for the sampling aspect (variphrase)Over 3000 sounds with lots of repetition.
*** This is a quick overview of your choices. You can get specific comments after we know what your needs are.
I use a PA80 full time, and after a lot of tweaking, reading and restructuring ..... it's doing the job pretty well.
Next step - get out to the stores and PLAY them all. They all feel different, and will act acordingly. Good luck!
[This message has been edited by Uncle Dave (edited 09-06-2002).]