I remember when I first joined prune, I pondered over going to Florida for quite some time, and I actually nearly went. But, having read peoples advice I am very glad to say that I stayed in UK and am still in the process of learning. For me, it was the right decision, mainly for the reasons posted above, and also by the time you have paid for the lot, it probably wont be that different in cost anyway. I have met a lot of good people along the way, and I have the pleasure of being able to fly here one I have my PPL, and not have to worry about airspace, whether etc etc the list goes on.
Best of luck,
Maz