Best dealer for service in Toronto area and/or Calgary?

[IMR]

Hi,

Looking at buying a previously owned 2012 Z4 35i in Alberta and bringing it to Ontario. I'd like to get it checked out ideally before shipping it home (hence Calgary) and thereafter deal with the best service department in the region for this comparatively uncommon car. This is my first BMW, coming from a very Audi/VW family.

Is Calgary BMW a good choice to look over the car for a pre-purchase inspection? Would I be better with an independent?

Once here, ideally I'd be looking at someone on the west end of the city, but I'll go to whomever is good. I have family in Kitchener, so that's a possibility as well.

Greatly appreciate any input!