GSRT hands down.

[soapbox]
I don't understand why so many people come out here (and just people in general) think that the C5 + FI is the greatest thing ever and will be sooooooo fast...
Obviously these people don't do research and realze that you're going to have a much more reliable car with lower compression and be able to boost higher! I just don't get it...[/soapbox]