STI vs. EVO.

Biased because I own a WRX. I feel like Subaru as a company is just an overall way better company. Plus, the subaru community, in general is very awesome.

Supra vs. R34.
I never thought that there was a "rivalry" between the two.. They're so different from each other. One's legal in the US one isn't. AWD, RWD.. The thing about rivalries is the similarities and trying to focus on the best out of those.. right? Kind of a dumb "rivalry" imo.

Civic vs. Corolla.
Civic for me.. It just looks overall better, through out all years. Good strong engine, interior in the newer generations are cool, a bit cheesy here and there but hey, it's a civic.

Genesis vs. 370z.
Come on, think about it. You're comparing store brand crap tasting ketchup to epic heinz. Yeah, it's 2 dollars cheaper, but you get what you pay for man. Sure Hyundai is coming up in the car industry but I am a strong believer in nissan's strength. They produce great cars, good looking cars, and are a well known good company.

Smart Car vs. Prius?
Smart car + Hayabusa engine? LOL :]

Camaro vs. Mustang
I'm leaning to the Camaro, it's an all around better looking car in my opinion. Every year, plus the 1960/70's Camaros are one of my dream cars.

rx7 vs. Supra
I would consider these better rivals, both made in the same time era, rwd, turbo, looks, etc. I would go for the Rx7 if I was rich and knew more about rotaries. The Rx7 is just a very clean looking car, I don't think there's any other coupe in my opinion that looks better than that in a 10 year radius of each way.

honda s2000? they look kinda similar with the long front end. but RX7 is better, i think its rotary put out more power than the honda does

Even though the Honda S2000 and the Mazda RX-8 are somewhat different in their goals...

They're both excellent sports cars. They both handle well, they both have nosebleed-high redlines, both have great 6-speed manual transmissions, and they both sound sooooo sweet!

And if you compare their power-to-weight ratios, they're not too different.

So that sounds like a great car rivalry.

RX7 Vs S2000 Vs Miata