I personally think training for a PPL in the States is a false economy. Training in the UK will probably cost you a little bit more, but it will likely be in the area where you intend to fly once you have your licence. Also, the savings from learning in the states are not that great, once you have factored in transport, accommodation and possible additional required training/testing. Besides, providing money to the UK's flying schools will help our economy, and perhaps be the difference between your local flying school remaining in operation or folding. I do not know your circumstances, but it may just be that you will need that local flying school for the purposes of hiring aircraft once you have obtained your licence? I figure if you are happy to pay the cash to fly for fun in the UK once you have your licence, you might as well do your training here too?
I have just started a PPL(H) and intend to do all of my training here in the UK, despite the fact that I am generally in the states two or three times a month. Once I have the licence, I may start hiring the odd R22 whilst over there, but that will be in addition to the flying I will continue to do in the UK.
GS