Well, this is going to be one hell of a post.
Dodge Charger SRT8 vs. Chevrolet SS; Chevrolet SS, I like the looks of the current charger due to having styling cues from the classic Chargers, but I love Aussie muscle sedans more.
Toyota Sienna vs. Honda Odyssey; I personally would never own a minivan, but if I had to choose; the Honda Odyssey.
Ford Mustang V6 vs. Dodge Challenger; Mustang, I don't care about engine displacement, it's my favorite pony car no matter what.
Alfa Romeo Madness; The 1952 Disco Volante.
Toyota 86 GT vs. Scion FR-S vs. Subaru BRZ; Of the triplets, I would personally have the Toyota GT-86.
Ford GT vs. Ferrari F430; Ford GT since it's a better performer and is better looking. It also has a higher top speed.
Buick Regal T-Type Turbo vs. Ford Thunderbird Turbo - The Buick Regal, I can't stress enough on how much I adore that body style. The Regal of that time was awesome!
Classic & Modern Pony Cars; I think I'll go with the Modern Shelby GT500, but only in Coupe Form. I don't drive Convertibles.
Sport Trucks & HSV Maloo; Ford F-150 Lightning, I said I like Sport trucks and well; the F-150 Lightning has always been my favorite one.
Sporty Convertibles; Mazda MX-5 Miata, it's probably the easiest and cheapest car to maintain of the 3.
Nismo GT-R LM Road Version vs BMW M3 GTR e46; BMW M3, because M3!
Nissan Stagea 280RS Autech Version vs Volvo V70 R; Volvo V70 R, I'm not much of a fan of the stagea and Volvo in the recent years has become another new favorite car manufacture for me.