Eddy,
There are both pros and cons to training in the US. You seem to have been given most of the pros! That's fine, but you need to look at the other side too. Briefly, when you come back to the UK, you'll need to learn about radio use over here, and how to understand and cope with UK weather. And it's probably true that over here
The standard will, in all probability, be higher and the airspace more relevant and demanding.
However, this topic (UK v US) has been covered many times here, and possibly on the Professional Flying forum too. If you haven't already done so, do a search and read what everyone has to say before you make your decision.
Good luck.
