I've done training in both UK and USA, and agree with all that's been said. If you fly for fun in the US, you can have a lot of fun. If you try to get a licence there, it will be hard graft.
There are some awful schools there - either lousy aircraft or lousy instructors or financial sharks or several thereof.
I've heard nothing but good about Naples Air Center from folks who've been there. I'm off there in a couple of weeks to do an FAA IR and have a crack at a CPL. More when I get back ;-)