uncle, it's always about choices for needs , right? i too get along fine w/61 but if i had 76 i'd sure find a way to use
that , especially playing the piano and rhodes sounds, and setting up splits that allowed me to use the very bottom for bass transposed up an octave to avoid muddiness, or as trigger for arranger bass lines, and have another octave lower available to use w/right hand, and 3 more notes on top to boot. i haven't played anywhere where space is so tight that the difference in size would be a problem. others may have no requirements such as i do for under 30 lb weight. I never use a sequencer or midi files, others use those in small or great degree. i'm not trying to start a war w/yamaha fans, am just making a reasonable guess from what i've read and samples i've heard that the pa800 will outflank the 3k..but have not tried it yet, of course. I have always preferred the Korg nav system--harder to learn at first but faster playing live once you get the hang of it.

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Miami Mo