yes, the '05 has 10 more HP, BUT it is HEAVIER. that 10 hp isn't going to mean a whole lot with the extra weight (73 pounds difference between '04 and '05. from the dealer book, '04-S weighs 2767, '05-S weighs 2840)
and not to start yet another discussion about who like which style of RSX but i think it has lost some distinction. front = civic, rear = TSX. you can't say that about the 02-04s... they look like an RSX - period. not like a civic, not like a TSX, not like anything else.