Gary,

You are correct...I don't work for Yamaha full time, but I am hired to do clinics and demos on a job to job basis.

The three keyboards you mentioned all have 61 keys, so I imagine you can live without 76 notes.

All three are great boards...I've played the E-80 and it's a real beauty...lots of terrific sounds, cool styles, touch screen, nice speaker system.

A lot more money than the S900, but probably worth it.

The PA-800...can't say much about this one as it isn't sold in my local area, but according to several owners on the forum it is a fine instrument....again, more money than the S900.

The S900...well I can vouch for it's musicality as I own one...it replaced my PSR-3000 and I really like it....love the SA and mega voices that bring it nearly to the level of the Tyros2.

You have to try all three and go with what your ears tell you.

As far as the best "bang for the buck" the S900 is the one...but if you have the extra cash, then the Korg and/or Roland may be the way to go.

Hope this helps.

Ian