Looks aren't everything. I wasn't a fan of the looks of the Taurus/Sable (jelly bean shape) when they came out in 1986. But I have purchased 3 because they are nice driving, roomy, reliable cars. Still have 1, the other 2 were victims of accidents that left them totaled.
Aztek probably would be my number one pick, but reading some of the road tests, it was a pretty amazing vehicle to drive.
Gremlin. My best friend's parents bought one, 1974 Gremlin X with a 304 V-8. That car was FAST. SCARY FAST. And smooth. My friend and both his parents got speeding tickets in that car because you though were were going 55 and the red lights show up in the rear view mirror, and you'd look down and the needle was at 90.
Edsel. Well, when new, they were mocked. Today, hard to mock a car that sold new for $3,000 that is selling for close to $200,000 now. Highly collectible.
Pacer: Can't argue the looks, but the layout was amazing. Lots of room, passenger side door longer that the driver's door to make it easier to get in and out, and those bullet proof AMC engines.
Pinto: My first car. Had it 16 years. Reliable. Lots of exploding gas tank jokes that faded after the recall, and cooled when my friends who needed rides to the shop to pick up their VWs, Datsuns, and Toyotas.
Plymouth Valiant: Never thought about the looks. But the 1960's models probably were among the most reliable cars ever built. And I don't like Chrysler products. But those cars were amazing.