I had a p-reg 1.0 polo once, and there was a horrible sound whenever it was running cold. VW admitted that this was a problem, and they didnt know the cure. So avoid the 1.0!!!
Also, there was a recall on the brakes for that period, make sure that if its been recalled, the work has been done.
Apparently the 1.4 is the best one in that range, so i reckon if it looks good, drives good and aint been crashed, anything goes
