Hard to say really, so here's my three best, in no particular order.
The malibu, has been a phenominal vehicle chassis wise, couple years ago I removed the factory rotors (cheaper for new than to turn), shocks, and drag link, the only other things on the chassis I've changed were the body mounts. Not bad for 25+ year old car. Engine and transmission are another story, lol.
Even though it isn't mine, my gf's 81 AMC Eagle SX/4 is astonishing, that car sat dormant for 15 years under a pine tree, before me doing nothing more than hooking a jerry can and a battery to it, fired right up. Did a carb rebuild, tune up, few gaskets/seals, front brake rotors, a clutch, few other minor things and that car is back to daily driver status (it recieved a paint job too, lol). We take it on our long trips just because it runs and drives so well, I was so impressed with it, it sparked me to find one of my own, only I got the more practical 4dr version as opposed to the "spirit" type of my gf's that tends to be a little cramped (I haven't had time to even touch it yet though).
My 97 cherokee that I just put to rest recently, that jeep took more abuse than any other vehicle I've ever owned, the reason I put it to rest was because it was unsafe to drive due to rot (the roof oil canned when I hit a bump :shock: ). The engine found its way into my 88 cherokee that replaced it though, 200k and still runs like a champ.