I had a 4200 until the kids came along a couple of years ago. I regret deciding to selling it as they seem to be holding their value reasonably well now, and once the kids are a year or two older I’ll seriously consider owning again.
I’d look at a GranSport or a GranTurismo (I personally think they don’t look as good, but that’s just me). The 4200 is also a great car without the premium associated with the GS, just lacks a few extra horses (not that you’d miss them at this end of the scale) and some cosmetic bits (the louder exhaust note in sport mode is a nice touch). I actually quite liked the more laid back approach of the 4200. If you’re leaning towards a 3200 you really need to know what you’re doing. There are a few known issues with the throttle body and the turbos can be temperamental – being earlier they do have more issues associated which the later cars had ironed out.
Whatever you go for get a professional pre-purchase inspection done – they’ll come up with enough to offset the cost against the purchase price. The clutch is the big ticket item, and they don’t last as long as you might hope. Make sure it’s recent when you buy, and expect to have to replace it at least once during ownership.
In terms of general reliability, don’t get too caught up with the reputation. I had mine for around 5 years and it was averagely reliable. One weird issue with the driver door not closing and I had to replace brake pads and disks towards the end, but other than fairly standard annual service type stuff. Parts are not cheap though, so go in with your eyes open.
If you’re in the south east I can’t recommend Grimaldi Engineering highly enough. Based in Essex, really lovely people out to help you with ownership not fleece you, and he knows his onions. http://www.grimaldiengineering.co.uk/
Scuba gear in the boot – don’t know, I don’t scuba dive, but it’s not a bad size for a sports tourer. It does have back seats as well… I used to be able to get a full sus in a zipped canvas bag, including wheels (detached, of course!) on the back seat, so as long as you’re taking steps to protect the upholstery that’s always an option.
Feel free to PM me if you want more info.