i prefer the hatchback, and not just because i own one.
i've always loved the hatchback because it looks alot more sporty. don't get me wrong, i LOVE coupes, and if my car had been a coupe instead of a hatchback, i would've bought it regardless cause it was a sweet deal. but the hatchback, because of the sloping windows and the fact that it doesn't look as much like a family car makes it look faster and sportier.
also, i don't think the flip-up lights go well at all with the coupe rear end. there's a few one-via's out there that i like, but it's rare that i like them. i don't think the flip-up lights flow with the coupe rear end. but of course this is easily solved with an S13 front end.
so i really like both alot, but the hatchback wins by a nose in my books.