i'm in a similar position, sold my 350 recently and tryin got decide what to go for next, What puts me off a brand new 370 is the depreciation, so i'm looking at one for around 18-20k, also looking at a S2 elise, or exige, elise probabley a 111R or SC'd if i can find one or a earlier s2 exige.
370 plus points are the looks and interior, loved my 350 to bits and know i'd love a 370 jsut as much
bad points are depreciation rates and repair rates if it goes wrong. (are the 370's gear boxes better than the 350's? dont want to replace one of them again!)
Elise/exige. plus points are cheap to run, fuel, tax etc. Plenty of power to weight, great fun. But would i miss the comforts that i loved about my 350.
Looked at caymans but they're out of my price range, plus porkas do nothing for me.