If you want a loud @$$ muffler the
Megan Racing M-RS muffler is a good choice. I have it, pics in my gallery but i'll put one here. I get compliments on the sound all the time, especially at gas stations from fellow car enthusiasts.
However, I do also get glares from old people and weirdos who just don't understand.
To be honest though I wish I went for the Magnaflow, just from a performance standpoint. But you can't beat $150 really. (Not by a lot at least)