You know, rear rotors are ALWAYS used. Your front brakes don't handle 100% of your breaking. In most cars its like 70/30 for front/rear brakes. As for saving money, I agree. If you're like me - when you replace a part you wanna replace it performance! Get brembo slotted rotors or something. I don't so easily trust drilled, too many companies out there just take normal rotors and drill them for looks. Can weaken inbetween and shatter a rotor under heavy brake-ing. Slotted is generally more for road performance anyhow, I think drilled is for brakes expected to be under pretty constant friction and heat. But if you -really- want stopping power, you need to upgrade the calpers, I don't know how many piston calper's we have stock, probally like 2 piston calpers up front and (*Well I have drums in back... blah.) but just take care, get some information before you buy from a random company like that.
<- that emotocon is awsome! I wanna use it in every post.