I was in the same position as you, about 8 months ago.
I was debating between the Tanabe and Greddy.
I chose the Tanabe Racing Medallion. I think it looks better and is more unique.
However it is loud as hell whenever the rpm's are between 2700-3300. It does come with a silencer though, however when it is in you only hear the exhaust when you get on it, and when you get on it sort of sounds like that lawnmower quality that some modded civics have.

Over all I still like the Tanabe and I have no regrets.