Personally, Fran, I rarely use left hand voices...I prefer to put the pads in the style...usually only one or two notes, as I find string sounds in the left hand too "full" and not quite natural sounding....I sometimes use an organ sound the left, and sometimes a piano sound, depending on the effect I want.
I could get by easily with 64 note poly with my playing style and the right accompaniment style...but 32 note poly on anything would be a bit constricting for me.
The E-60 would be perfect for 99% of amatuer or pro players...ditto the E-50.
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.