I've had a few sets (going on 80k miles). There is 1 question though: what size? Might be a moot point if someone suggests a tire that is not available in your size.
We're lucky that the 20" tire size is the exact same as almost every large performance car (Camaro, Challenger, Charger, etc), so there is a plethora. I'm on my 4th set:
1. Eagle F1 Supercars: good at first. Not anything to call home about. Harder than most, but overall decent. Lasted about 20k miles.
2. Cooper Zeon RS-3S: Great tire. Excellent grip, very little noise and lasted about 25k miles. When I first got them (early 2013) they were in the $130 range, now they are over $200. Quite ridiculous if you ask me.
3. GoldwinsomechinesecrapIboughtinabind: absolute crap. Noisy, went against my own preaching of not skimping on tires. No grip.
4. Pirelli P-Zero: Good grip, quiet, awful treadwear. I rotate at 5k with my oil changes. Front tires are nearly 1/2 gone. I'll be lucky to get 10k from these before they are useless in the rain...not optimal in the panhandle of FL.
If I could do it again, I would get the Coopers. I got the Pirelli's on sale this summer for about $170 per installed, so I had to do it. Right now, looks like it was not worth it.
If you know of a place to install them, I would go with discount tire direct. They usually have some deals going on and if you get their little credit card, it'll save you even more (usually in the form of a Visa Gift Card).