If I could pick 'em, and I guess I can actually, I could be happy with 100 styles and about 100 sounds.
A few guitars, both electric and acoustic, a great piano or two, a few saxophones, organs, brass, horns, harmonica, Cajun accordion, Fiddle, strings, banjo, oohs and aahs. I could cover those with 50 slots easily. A few sound effects for fun would be nice. I don't use many synth sounds; some people could use 50 of those alone I'm sure.
Look at your average five or six piece bands, rock, country, blues, and I need all the instruments they play.
But of course I WANT MORE!
DonM