Plan on purchasing the Ti system with mufflers, as resonance on a street driven car is excessive, IMHO. I believe it is lighter (15-20#'s) and makes more horsepower (5-10hp)than everything else out there and has a distinct, exotic sound. It just depends if these incremental benefits are worth $1k more than another cat back to YOU.
They were to me and I'd do it again. This is the best Corvette ever and I have decided to only put the best parts available (not necessarily the most expensive, but usually

) on it.
Just my $0.02.
Chad