i have the borla its quiet, except now i have this weird noise i have no idea what it is, when i turn corners slowly sometimes u can hear it, sounds like a strain coming from the exhaust, i dont know how to explain it.
i absolutely love my borla exhaust. its not too loud, but it gives an awsome deep tuned sound. doesnt drone on the highway at all, and its sound is as far from ricey as you can get. it looks pretty good too. i love mine and would definately suggest it to anyone with an RSX.
i was wondering this same thing, cuz the RS-R is cheaper, ad straight thru, but the borla is so quiet. i bet sinc ethe RS-R is so straight thru, it'd probably be a bit louder. but if u really wanted, u could just use teh rs-r catback, and a borla muffler, and it should be nice and quiet, but still be straight-thru.