I'm happy with my magnaflow...i love how it sounds and the HP it added in my XFIREX

About changing it...I'm saving my money for either Kleemann or Renntech Performance Package 6 which will eventually change my exhaust and muffler
With these packages...I can still catch up the future of newer sports cars since HP's are getting higher everytime a new model comes out. The Crossfire style is a classic and thanks God we only have one model for the 2004 CF with no options. ( That's what made me buy a Crossfire and not a TT or a 350Z ) and I like it that way because that's what makes the Crossfire a collectible
For the money that I'll put on it...I think it's just fair than getting an upgrade somewhere and after a few runs...your engine is dead

It's the same amount of money in the long run. And that's what makes it fun...modding your car to your likes and taste.