I havent driven an ST but my brother has a TDCi Zetec S, that's a brilliant little car. Handling is unreal and it's extremely fast in real world driving conditions. Not that fast 0-60 but on windy roads etc it flies point to point. Apparently the st has alot better suspension and handling compared to the zetec-s and thats good, properly corners like its on rails.
Get one, you won't be dissapointed
edit ** Don't lower it you'll fooking wreck the handling.