Have you considered a zetec s TDCI? not the quickest car by any means but cheap to run ect and good fun to drive.
XR2I? Classic insurance?
mk5 zetec s good fun car and still look good IMO.
As said a puma could be a good choice, I Know everyone things there a bit girly but there quite capable-basically a go faster fiesta.
OR.......A sportka

...................Hear me out on this one.............YES there abit girly.....YES your mates might take the piss( I know, I had one, LOVED that car)......BUT..there REALLY good fun and can look really good with a few well chosen mods, I found that insurance for me was considerably cheaper on a sportka than a zetec s,you get full leather if you get an SE.....and I doubt any of your mates will have one, Its always good to be different.
EDIT: I was 18 when i had my Sport.
Just my 2P worth