CTS-V! Ever since the new ones came out, the last body style dropped in price a whole lot. I have seen them for around 15k. You can't beat it. Nice luxury car options, LS6 or LS2 with 400hp and 400tq. Easily modded to go as fast as you would like. I wish I had videos of mine and how it sounded with test pipes and a magnaflow exhaust. I sold it and got an S2000, and I still miss it. I'm just waiting for the current 550hp V's to drop in value so I can pick one up certified pre owned used ( caddy CPO warranty is bumper to bumper 6yr 100k miles, and their service is awesome).