My 1993 Chev C1500 Suburban has been bullet proof for me. Over 200 K miles on it now, have had hardly any problems. Body is holding up well, engine uses virtually no oil, transmission is holding up well. Decent gas milage for an old beast, easy to do maintenance on, and probably one of the most comfortable vehilces I have ever driven (it's got excellent room for a tall guy like me). Runs great in -30 weather, and can cary a #$%&load of stuff with ease, takes a beating and keeps on ticking.
Runner up would be '84 Parisienne wagon. Bullet proof, kept it to about 300K km's when it was sold. 305 Chev engine was nearly flawless, decent power (for it's era) and great gas mileage for an old boat. The 'Burb trumps it for having more miles on it.
Best car I have owned, as in most fun to drive, and most enjoyable is my '72 Gran Torino Sport fastback. It's a real headturner (never has ANY car I have driven drawn so much attention). Fast, and fun, and grew up with this car (was my father's car, which he bought new). It's also been pretty reliable too, with very few problems since new, but it has had an easy life, no winters, always garaged, only the best of maintenance.