Well, I can say that I have been having this very same debate! It seems as though there is still a sort of "class divide". I went to the states in 1996 to kick off my flight training proper. I came back to the UK with a private/multi/instrument.
I personally found the training very good and my schedule was closely monitored. More recently I went to South Africa, that was a disaster!! I got badly ripped off by a guy here in the UK who set the whole thing up. I did make some good contacts though. A lot of the pilots flying in Africa seem to have FAA licences. So it depends, I guess, on where you are prepared to fly, and if you are flexible. This whole JAR thing is too expensive for me now so US is the "best of the rest"!
Don't get sucked into sweet sales crap, and always have a get out plan. I think JAR (UK) training would be safest in terms of customer service etc, but the US is nearly there if not in some cases better. Good luck!