I would put the base RSX in the low-end entry-level sport luxury market. Its a 2 door obviously, nicely refined interior with leather, ok engine, and ok suspension. The base RSX compared to the base Celica the RSX is more refined and better engine, comparable Nissan is prob the Sentra SE-R with 175 hp, whereas the Sentra is better performance wise, but does not have the Acura refinement, Ford Focus.....Mustang? not comparable except price wise, whereas you're looking at two different classes. The Mustang is a V6, with a ****ty ass interior, the focus is a hatch and is in a lower class in interior, engine, and exterior. GM's and Ford I don't really care to compare, they're domestics. to everyone their own dude buy what you like but I know you will be happier with the RSX. I hope I was able to be of assistance.

Peace.