I must agree with Funked. America's Hundred Thousand is easily the best book I have found on World War II fighters. Only drawback to it is that it only covers American fighters (which is far from a bad thing, IMHO).
I am always searching for good books on World War II, and whenever I find one that suits whatever I am interested in at the time, I will buy it. That is why my collection has become a bit eclectic over the years. I have books on the Hellcat and the Pacific war sharing a shelf with books on the Me 262 and JV 44 as well as the Viet Nam air war and World War I. Maybe complete is a better word than eclectic, but I don't think my colletion is anywhere near as comprehensive as it could be. I know it is nowhere near what I would like it to be.

-math