You want the real low-down on rotors?
Cheap drilled or slotted rotors crack because they are drilled/slotted after the rotors are cast.
If the holes or slots are put into the rotor when they are cast, they will not create weak spots, and will last the same as solid rotors. (ie, the big brembo/ap/baer etc rotors)
Just because your buying 'brembo' crossdrilled/slotted rotors, doesnt mean you will get the good rotors (drilled or slotted while being cast). Many shops buy solid brembo rotors, drill or slot them in their machine shop, and then sell them as drilled/slotted brembo's.
Having said that, for a street car, you will not abuse the rotors the same as somone who road races alot (no, i dont mean open track events once a month) and you will get no performance increase on the street by upgrading your rotors (even if you upgrade to a big 14" brembo kit, for the street, you wont get ANY improvement). But if its just for the street, and you want the look, then go for the cheap drilled/slotted rotors.. you wont do any harm.
Hope people who spent alot on a brake upgrade arent offended, just stating the facts.
-mike