I've been loving life with CFE-223 with 50-55's in the .223- accurate, clean, and it really does erase copper fouling to a big extent (probably determined a lot by how smooth the bore is).
If any of the LGS's ever get some TAC on the shelf I would dearly love to try it too. But if I'm doomed to using CFE-223 forever I won't feel the least bit disadvantaged.