I love my Vishnu. Superb quality. If you go that route though, good luck on trying to get it from those guys. I hear their customer service is lacking nowadays...

 

True that go Helix

 

if you're REALLY trying to save money, get the uppipe/downpipe combo from ebay. there's a write up on clubwrx (and maybe on here too) about it. do a search for "erz uppipe".

the combo comes with a helix-looking flex uppipe and a nvidia-looking bellmouth downpipe.

$189 for the whole kit....and I've heard nothing but good things about it.

(the downpipe eliminates both cats though...you can get it re-worked at a muffler shop to bolt to your midpipe for less than $50)

 

i say helix up and down pipes, they are really nice, i have them and the do the job just great, no problems!