Thinking about chopping my car in for an ST seeing as prices have dropped to a reasonable level for a 3 year old one.

Anyone on here owned one? I have been out for a short drive in a couple in the past, but wondering what they are like as an every day car? Are they particularly thirsty? I get approx 300 miles to 45 quids worth in my car now, how would they compare to that?

Anything I should look out for when viewing some?

Rich