IMO the greatest single exit = Kakimoto GT1.0Z
Fart can is not to big, got just the right angle, sound great and not that expensive.
Note that the silencer is optional and you really want it if you run on a de-cat headers.
Quality is really there but you need to be patient since they are made to order. Tip is TI and change color with time, it's all blue now !
Sound clip from Kakimoto (weird format, VLC should play it!):
http://www.kakimotoracing.co.jp/movi...b11344_zc6.wvx