Several contenders but on a points countback the prize sadly goes to a Volvo. I had it three or four cars ago: a dark green 850T5 estate with a manual box and Bridgestone S02 Potenzas. All the practicality of a massive estate, cruise all day long in comfort (and virutally un-noticed) at high motorway speeds, yet amazingly agile and seriously quick in the bendy stuff. If you have the nerve to chuck something that big, try braking on the ABS, turn in hard and floor it... you don't so much get a 'four-wheel' drift as as 'three-wheel' drift
Looks like this: Goes like this: (actually it goes quicker cos its a 2.3 turbo in the road car)