Aus
Before you do anything, think about what your goal is! Do you want to find a job in Europe?
Then Delta and Phoenix east are no good for you due to the fact that they don't offer JAA training.
OFT offer JAA flight training and are good, but that's just my personal experience.
NAC offer JAA groundschool but no JAA training, wel they do offer, but canot give JAA training as for the moment, maybe it wil be fixed later this year.
But to enter the JAA ATPL course wich is being given at NAC you only need the FAA PPL wich is an ICAO PPL and they do train for that at NAC. So, if you want to do all your training in the US, you could go to NAC, do your FAA PPL en then the JAA ATPL fulltime residential groundschool at NAC, en then go to OFT, get you M1 visa changed to them, and continue you flighttraining with them! As to say, your FAA IR, JAA CPL and JAA Multi engine ratings.
Then you wil only need to do a conversion course back in Europe (UK) at stapleford, exeter, or where ever you want to do it.
This is just a possibility, you can also do the whole thing via OFT/CABAIR wich in my opinion gives you a good deal as wel!
anyway, my 2 cents
Raceeend