when you say stock brakes really suck, which stock brakes are u referring to and why do u say they suck so bad? from my exp. integra sized 4lug brakes are more than enough for a integra let alone a civic.
5lug is nice, pros: can use a stock pad at the track with no problem, no fading no over heating and its a larger brake set up that still uses a oem pad. cons: really heavy, locks rears pretty easily with a 4040prop, $$$. i dont think its worth they money if performance is ur only concern tho.
willwood kit - very good kit (brian at fastbrakes sells a great product at a good price and customer service is one of the best out there). pros: good peddle feel (more pistons), light weight, larger rotor. cons: gotta order pads, cant just stop at pepboys and pick up a set if u need, sometimes need different rims or spacers and extended studs. over all a great upgrade and works great. i wanted to go back to oem tho that was my reason for getting rid of the kit.