Its been a while since I posted this initial question. After agonising over different options I decided an estate probably wasn't necessary for the few times a year I would actually need it so I narrowed it down to the alfa and the jag.
I test drove them both today, and although I love the look and agility of the alfa, there was just something nicer about the jag that I can't quite put my finger on. Although Ioved the look of the alfa interior in pics, in real life I preferred the jag, which I thought looked boring in pics.
Driving wise, I found the alfa a bit annoying and jerky. Gear shifts felt a bit slow to me and the initial power was lacking when flooring it. The jag has a nicer powerband and snappy shifts, though a little jerky at very slow speeds.
So, I have decided to get a Jag. Not the one I saw but a newer 380bhp version. I insurance is actually cheaper than the alfa. Tax will be more so its a negligible difference really.
I have booked an inspection on a different car next week, so fingers crossed.