ST24 is a lot of car for the money, and if you put an ST220 K&N induction kit on it will sound really nice. the GTI-6 is also a nice looking car imho, and they go pretty well, both nice cars, but id go for the 24. as dan says, the impellar situation does seem to have been sorted on the later cars, although for the price of a metal impellar pump, and how easy it is to do, i changed mine just for peace of mind.