Chapparals were nice sleds so no offense there and some of the late model SST's are too lightly constructed for their own good (they can't take a beating except for drag strip runs). Ok now, lets point out something about Yamaha's marketing squad. They claimed that the 88' Wave Runner was the first sitdown PWC so what does that make the 68-69 Sea-doos and the 82' Wet-jets? They claimed the 1990 WR III was the first 3 seater when Sea-doo's GT model beat it to the floors by a few months. The superjet was first built as a 633cc unit back in 1990 then changed to a 701 in 1993. Then in 96' It was redesigned to carry alot of the 94-95' FX1 features (spring assisted handlepole).
So considering they were built from 1990 to so far, 2006 with the same model name, yeah....they are the best selling standup of all time. Sorry about the "junk" comments, thats a little too harsh.