I totally agree with SI ST, i had a 1.7 and loved it. But the ST is a better car for common use, and has a better handling then the Puma in my opinion.
I disagree with Dave T ST, the suspension is hard, but it handles bumps better then the Puma.

If you like to buy a ST because it's faster, or for better handling, don't.
If you like him for the looks, space inside, and be more "undercover", do!