Britannia FS
I have just returned from florida where I trained with Britannia FS who I would definitely recommend. They are known as one of the friendliest flight schools out there, and I had a fantastic time and am still depressed about being back in the UK with all this lovely weather!! (NOT!!)
I did look into numerous schools out there before I parted with my hard earned cash, including NAC and OFT, but they appeared to be that little bit more expensive. For example, the NAC PPL cost didn't include accomodation when I looked, whereas the Brit FS did so that was what swung it for me being on a rather tight budget.
If you want me to give you any more info on it, then drop me a line. I'd be pleased to drone on about my time in FL to someone who was STILL interested!! (I get the impression that my colleagues are all a bit bored with hearing about it!!