Borla or Magnaflow... You can't go wrong with either. Check out CFM (Central Florida Motorsports) they are a sponser on the forum. They will price match Magnaflow CB exhaust systems if you can find one cheaper price anywhere on the web. The Borla CB system is $599 at CFM.
I'm getting ready to have my headers wraped, instal a CFM "street" HFC, CFM Flex Pipe and a Magnaflow CB system (all brand new parts); and have it all done all at once with obviously all new gaskets and exhaust hangers.
2004 Silver WRX 300+whp
2003 BMP VW Golf GTI 20th AE #2845/4000
2002 Sonic Blue SVT Focus #1200/4788
2000 T-Red SVT Contour #1089/2150
1998 BDP Subaru Impreza 2.5RS #1595/1695