Nobody mentioned the different training standard yet? getting you FAA CPL(H) is really a "license to learn" and figure out the rest on your own. EASA teach you much more proficiency. things like, down wind quick stop, 360 autos, all tail rotor failure scenarios, much greater confidence will come you out of EASA training, In the end nothing replace flying hours to get you better, Cost wise, USA is the place that will allow you to maximize that, weather wise Florida is the place that will allow you to maximize that,