I had the 2002 AWD XC70 for 3 years and had only one problem. It does have a low pressure turbo....I know because the IC hose came off: that was the only problem we had. Handling wise it's a bit vague at 70+ miles an hour but that's to be expected for the type of car it is. If I remember correctly it got about 27mpg on the highway. I sold it because we had twins and wanted more space to get them in and out of the vehicle. Moved to an AWD minivan
I used the dealer in Chapel Hill for all services so I don't really have a recommendation for another Volvo mechanic.
The car was the best all weather vehicle I've owned. I bought it after renting one in the winter to drive through the Adirondacks in the snow.