I want a 172 Cup really, however a mint one is £5.5k. 182's are slipping down to around the £6k mark for a 50k miler. It therefore makes financial sense to get a 182 and get a decent deal.
I don't do depreciation, im only considering selling the Lupo as I reckon I can sell it for what I paid for it, therefore getting a years/ 10k miles free motoring. I did the same with my 1.2 16v clio.
Unless it makes financial sense I won't bother.