actually, the fastbrakes kit uses an 11" rotor, as opposed to the integra's/si's 10.2" rotor. it's a great upgrade for the dx knuckle - which uses the smaller 9.75" (?) rotor. the kit allows you to upsize the rotor and use it with an integra caliper & dx brake hose.

i've had both the fastbrakes kit and the integra brakes on my car. i can tell you first hand that there's a huge difference in braking between the two thanks to the larger swept area of the 11" vs. 10.2" rotor. an added bonus is that they will fit behind 15" rotas and most 15" oe wheels. with the other kits, you may have to buy larger wheels, too.

the worst option is going to the junkyard. you never know what you'll end up with.

also, slotted rotors are not a waste of money. cross-drilled - i don't know...never used them.