I converted my FAA PPL to a JAA PPL with these guys at Long Beach, CA.
It is a very very conjested airspace there and if you are just starting to learn to fly it can be a bit much. Spectacular at night though, there is a VFR corridor right over LAX which is something else.
They did look after me out there and got me through it all on time. If you like a challenge go to Long Beach otherwise try another location with them