Bob, a good way to decide is to look back to '98 when you bought the
XC70 (then the V70XC, of course).
When I was looking at that time, I considered the Audi A6 and decided on
the Volvo (in addition to being a Volvo fancier) because of carrying
capacity. The Audi's lines are nice, but the degree of tumble-home,
taken together with the inwards taper toward the stern of the vehicle,
significantly limits carrying capacity. With such capacity very much a
consideration at that time, there was really very little to push Audi.
There's also the fact that here in Reno (elevation 4,500' to 5,000') a
turbo works very well, indeed. Good mileage when you don't need to push
hard. I assume that Audi is still fitting the bi-turbo engine to the
AllRoad, but when our old V70XC can cruise over Donner Summit (7,300')
with power to spare . . .
Good luck in the choosing.
bob noble
Reno, NV, USA