My advice is to wait until a good medium mileage 2.0 TS example comes along, say 1998 (Phase one and half with the nice momo leather seats) or early phase 2 (September 1998 on), with 70-80,000 miles on the clock, with full service history, ideally an enthusiastic owner who has changed the oil/filter regularly with receipts to prove, with no annoying airbag/ABS lights, that may have cosmetic wear and tear but is essentially mechanically sound, with no thumps and bumps from the suspension etc. Good things to look out for in this respect are (in the context of the TS engine, and in no particular order):
1) Regular servicing - the TS likes clean oil and filters and likes the oil kept on the max line on the dipstick.
2) Have the front wishbones/droplinks been changed recently?
3) Have any of the rear suspension arms/bushes been changed recently - ideally with a poweflex bush upgrade?
4) Are the discs/pads fresh? look for corrosion on the front inner discs, a weak point on these cars.
5) Have the shocks been replaced recently? the rear shocks are weak on these cars and are the ones to go first.
6) Any noises from the clutch release bearing, and does the clutch bite at the bottom or top of travel? Clutches on the TS are not it's strongest, and not cheap to replace.
7) has the timing belt/tensioner/idle bearing/balance belt/balance belt tensioner/variator/waterpump been changed recently? £450 minimum to do all of this from a good specialist with the correct tools.
8) Check the rear demister works ok. There is a sticky on this.
9) Other obvious bits like warning lights etc.
What I'm saying is that you can get a good GTV, well looked after, perhaps a little higher mileage than 80k, where an owner wants to sell for good reasons, but has looked after it because he's an enthusiast. £1k is possible in this regard if you're patient. Otherwise, up the price a bit to £1.5k plus and the world increasingly becomes your oyster.
What you don't want to do, unless you have deep pockets, is to go for a GTV that, on the surface, looks nice and shiny and bright, but underneath has a dodgy (noisy) clutch release bearing, clonky front and rear suspension, noisy variator, dirty oil, oil that is low on the dipstick, uneven wear on the tyres (another sign of dodgy suspension), spongy brakes, ABS light on (MOT fail and pig if you need to replace either the ABS pump of the front sensors), an indifferent customer who doesn't care about the car, doesn't know anything about Alfas and has always treated it like a Ford, Vauxhall, or even worse, a nasty rubbery French car.
If you get a good one, it'll stay that way if you look after it. It's a fantastic drive for the money. Get a bad one, get ready to see the bank manager asap