I'm a UK pilot who trained in the US in 95.I enquired to many schools worldwide and got a 100% response from the american schools.The US is booming in rotary aviation at the moment and if you can get a J1 Visa its the place to go.UK schools did not seem to be interested in my money NZ gave me a reasonable response and Blue Tongue also gave me some info.My own opinion is that you are in the position of power at the moment choose your school very wisely and give yourself the best opportunity to build hours after you get your licence.