I'm casting about for a big estate and this thread prompted me to check out A6 Allroads, and I've seen quite a nice looking one nearish to me which seems to be at a reasonable price as well, so I might go and have a looky see.

Don't know why, but Audi's have never really floated my boat though.

I think the sloping tailgate limits the load carrying space in the rear and I've always had a perception that they would be expensive to fix...
My mate had a Q7 which was nice, but he said it chewed up tyres like he'd never seen before. The A6 Allroad would have the same 4x4 Haldex system as the Q7 I think?