When i was under 25 (which wasn't too long ago), i loved Hertz. The gold family cdp and other waived underage cdps got me to 5* pretty quickly. They treated me like a king, and i never looked for rentals anywhere else.

I had no issues with the Fun Collection (including 300hp V6 mustangs). The rebranded adreneline collection (the V8 mustang) is very new (Q1 2011), so i can't comment on that.

Especially as a gold, once you book it, especially at an airport, the only other check is to make sure your ID name matches your contact.

Have fun.