I have the 18 inch classic launcher, the very first launcher that Chuckit made and got the smaller sport 14S for my toy and miniature poodles.  For a small ball launcher it goes pretty far, much further than I'd ever be able to throw a ball.  My dogs go crazy when they see this launcher because they know it means "play time".  The sport 14S launcher works with the smaller 2 inch balls which is a great size for smaller dogs.