1. I order mine online, from performanceparts. they are a bit pricy, but do not warp and serve long time. also, breaking power is improved.
http://auto.howstuffworks.com/auto-p...ke-rotors2.htm
2. Autozone is ok, NAPA is better, but a bit pricier. everyone nowadays has price match anyway, even for online sales.
3. if you go for slotted rotors, go for ceramic pads, as they are more durable and will not shag black dust all over rims. clean rotors with brake cleaner regularly.
4.
http://www.tirerack.com/brakes/tech/....jsp?techid=85