Oops. To my shame I must admit that I didn't check the functioning of the a/c in the 944. Checked everything else and the seller is very upfront as to what works and what doesn't (basically I didn't find anything wrong that he hadn't mentioned beforehand) so I'm hoping he wasn't telling porkies re the a/c. And yes, it does drive well - I've driven enough supposedly good ones to know the difference.
Well, the whole dilemma is (as some people mentioned) - head says Miata, heart says 944S2. The thing about the Miata is that the current owner does appear to have invested some work in it and you can see the improvements so I don't think it would be a massively bad buy, but I'll probably be looking at a weekend's work to get most of the faults addressed. Plus it's cheap for a Miata around here and one of the few that has a hardtop.
I'm beginning to think I should wait until my 911 and my house in the UK are both sold, hopefully there'll be a little cash leftover to buy a 944 or another 911 without having to go to the bank hat in hand. It certainly doesn't look like there'd be anything like a deposit for another house left.
I'll have another word with the owner of the Miata - he says the HLAs are quiet directly after an oil change but took a long time yesterday to quieten down. I'll suggest that I'm willing to throw $50 to him for an oil change and if that shuts up the lifters and we can figure out where the diff leak is coming from, we might have a deal. If this doesn't work out I think it's S2 time.