I was one of the earlier UK visitors to Naples, and I chose it after much research and input from people on PPRuNe and elsewhere.
There were only two places in the USA that got the top rating from all the correspondents - Naples, and Flight Safety International. FSI wanted me to wear a uniform, and reckoned they'd need well over $10k to get me to the standard to pass an IR. Naples looked at my experience first (including the IMC rating) and suggested around $2,000.
Naples was an excellent experience; totally professional, aircraft well cared for - snags dealt with, not deferred - and I have no hesitation recommending them.
I didn't go to Orlando because one or two people were not happy with the experience there. That may or may not be statistically significant.
I know several others who've been to NAC since, and all were happy with the experience. Some have gone back to do further ratings.
Any help?