Without starting a import/domestic arguement, I will say that I have had no major mechanical problems with the two buick roadmasters I have had. The drivetrains are solid, and parts are plenty available because of all the different LT1 platforms/configurations. I had an optispark failure (my fault, I pressure washed the engine before learning you can't get an optispark wet) and have had to replace a couple of plastic clips that keep the windows in the track (this is actually my main complaint, when they get a little older, the plastic gets brittle, I have to fix my driver's window now) My cars got 131k on the
original motor, so we know they can take a beating

As far as lincoln town cars go, be careful, the early years with mod motors especially (started in '92 I believe) had fire problems. A friend of mine almost lost his house when a '92 lincoln town car spontaneously combusted in his garage. There was extensive damage, between the damage and relocating his family for about 8 months, his homeowners insurance paid out over $100k, they sued ford, ford sent out some reps, they took one look at the engine bay, and cut the insurance company a check, so it's not like they don't know. I'm sure it has been addressed in the newer cars, and spending 6-8k you won't be looking at a '92, but I wanted to share for anyone else that may not know. Luxury cars are a little different than say comparing a cavalier to an integra, you can find a good, reliable luxury car built here domestically if you choose, I'm a little biased because I have one, but the B-body, LT1 platforms are really a hell of a car for the money. Hell, I'll sell you mine, PM me, I've got something a little different I've been wanting to do