I ran a Borla for a few years, added an H-pipe to reduce drone, then went Corsa, and now I am very happy. The Borla has a more V8 sound at certain rpm's with a decidedly muscle car, low frequency rumble. I miss it sometimes. What I don't miss is the brain-case rattling drone in too many gear cruising ranges, which in the end was the deal breaker. On longer drives, it was punishing. The Corsa has a more defined note that says Viper V10 more clearly to me. Also, the idle staccato is ultra sickness, and tunnels are irresistible to hoo-rah. Listening to some clips is always helpful.