Originally posted by Diki:
Now, I don't know about you, but just about every single job I play involves BOTH sounds. I can't justify taking two keyboards when one can do both tasks adequately. Hence the 76.
And I'm sorry, but every pro in my area that doesn't play primarily piano on an 88 uses a 76. Yamaha recognize this fact in their 'pro' line, the MotifXS. Sad they don't recognize it on their arranger line.
Oops!
Is it Groundhog Day again...? 
Well, Diki, I don't compromise when it comes to piano.
It feels plain AWFUL to play two handed piano on a 76 note semi weighted instrument...but, if you don't mind compromising, hey, that's okay...but I won't.
My little S900 works perfect for arranger play...61 notes are plenty and since Piano is only one of the many sounds I use, the action is perfect.
I don't know much about your area, but in my neck of the woods those who do have to play with one keyboard (especially if they are in a band) are using 88 note workstations or digital pianos ...mainly Roland and Yamaha...of course, these guys ARE piano players first and foremost.
Oh well, whatever works for you.
Ian