Thanks for all the replies
As said earlier, spending 2500 (I know it's not much to some) on an 03 reg kinda car is a bit more appealing than an older motor such as the Civic or the GTI6, of which I both like. I don't really want to modify it (I've already got a modified car, of which the make and model I won't mention! lol but it's a trusty Vauxhall which has done me brilliantly, just want something which handles now

)
Something I forgot to ask about was security. It's parked on the road - so ideally I'd want deadlocks and would add a decent alarm if ones not already fitted.
Handling and performance wise I guess most cars mentioned are on par. I'll have a look at the ZS's - I do like them really and noticed once how cheap they'd become.
Xsara's - I just can't get to grips with that front end on the newer models. I like the older front end, far more aggressive, but again - older car (so would be cheaper of course in retrospect) - but I'd like something with a newer reg too. So it's a case of combining all my wants and still having good performance (i.e. 0-100 under 20 seconds is what I'm after).
I'll have a looksie on the autotrader at all cars mentioned to see whats about too
Regarding 172's - I do like them... but I wonder how they fair on long sweeping corners at speed... do they feel sketchy and twitchy? Something I've noticed as a common trait of all small cars. Saying that the ZR aint much bigger and sounds quite stiff too so might be much the same lol.