Doh! Soft brakes still

[want-a-fast-svx]

After replacing the rotors with dayles slotted ones, all new stainless lines, and all new ceramic pads the braking is still not all that great. I've gone through two bottles of brake fluid bleeding the brakes. I'm not getting any air anymore and the fluid is nice and clear. The problem is that when the brakes are depressed the first 1/2-3/4 of an inch are not there basically. Its as if there is air in the system but i can't seem to find it. Could this somehow be my master cylinder having air in it? It's really weird because after that the brakes are pretty good but i figured the brakes would be right there when i pressed them when i bought all this stuff for the brakes...Any info is greatly appreciated.