For 20K you can experience the Birkin/Caterham for yourself
Having owned both, the Cobra has a more raw feel, while the Birkin/Caterham is like driving a giant go-cart. Power is more linear in the 7, being powered by a 168hp 2.0L Zetec motor. The Cobra however rides nicer and is more desirable from an owners standpoint.......
Bill S.