I've had two 20v non-turbos, having had puntos - smashing cars, and would never have a turbo due to the potentially expensive maintenance (bit breaking - all the big jobs can cost £500+) and need for constant upkeep (i.e. oil checking!). That said, buy the best and newest non turbo you can find - the later models had a VIS engine with a little more grunt and nicer wheels etc. In addition, all of these cars are getting on - to be realistic, even for a non-turbo, you would be best to budget £500 a year for upkeep - service, MOT and the inevitable bits. Buy one that has had the belts done once for a late model, and twice for an early or leggy model - demand proof in the form of receipts!
Also, if you don't plan on keeping it until it dies, buy one with leather and aircon as well as fsh (preferably from a coupe specialist like Motormech or Powerfiat) - these will help value and speed up resale.
If you want virtually limitless speed and power (given that all UK roads have a speed limit no higher than 70

), get the 20vt, but take advanced driving lessons as you can as many people have been caught out by the power and have stacked them. If you do a lot of urban driving, get the non-turbo, it'll be plenty quick enough.
Note - they are all thirsty compared to a small engined Punto - 25mpg urban, 30mpg at best to be honest - and the turbos should be run on V Power at some crazy cost currently. You'll be lucky to get more than 350 miles out of a £55 tank, unless you drive everywhere at 56mph and never accelerate (won;t ever happen in a coupe

). The turning circle is utterly cr*p on all coupes - if you constantly have to do tight manoeuvres, I would think twice - they are also long if you have to park in tight spaces!
Go for it would be my advice - don't bother with the 16v, getting old now, use more petrol and many seem problematic. There is a coupe section on here which is good, but IMO the best place for advice and to find a car is
www.fccuk.org/forum.
For a good, fully loaded 20v n/a, I would expect to spend at least £2k, less if you are not bothered about the bodywork or are very handy with a spanner and plan on spending your weekends working on the car! I just p/ex'd my IMO mechanically very good one for that which still need a few hundred spent on the bodywork.
HTH. Let me know if you need any further advice from a non ex-coupe owner
