I have the Borla and I actually prefer the sound/tone. I also have headers, hi-flow cats and a CAI, so unfortunately I can;t tell you juts the gains from the exhaust...
I believe Scrming has said this many times: Exhausts are a per-person choice. Some people like different tones and loudness, while others just want something that is more subdued until you get on the pedal...
The tips are 4.5" and I like them. I went with the whole catback, too. I spent a lot of time listening to the clips and looking at the pictures. I have also received lots of compliments for the sound. (Once the Stainless heats up, before that it is very raspy. Once it does though its a nice deep tone.) My neighbors love me!
