[quote=greeniniWhat about a 15-90, instead of a 15-91 how much difference does the direct drive actually make. Those of you who have experience with all 3 machines what would you hunt for? Is it realistic to pay under $100? I see all the great thrift shop bargains and drool, but have cut our thrift shopping down, will probably increase it shortly, tho. I notice Goodwill itself in Rochester NY area has a lot of machine and will be there in the fall. I should probably wait till then but I'm getting itchy :)[/quote]
I know a 15 would be my next purchase as well. I'm also curious about the difference between a 90 and a 91.