SASless, I disagree that the Brits always had trouble accepting American aircraft - witness the C-47, PBY, B-24, B-50, P-51, F-86, C-130, F-4 and many others. I would say that we accepted and operated them well enough. And I can think of 3 American jets that I would like to see in the RAF in place of the Typhoon.
But back to the Apache, which looks like an efficient piece of kit that will do a good job in the hands of the AAC. However, it shouldn't deploy to Iraq because war is not justified - yet. But that's all covered elsewhere.