It is utter rubbish saying that the CPL instructors in the US are not very good. Instructors are good, and examiners are also very thorough.
Also, this idea that the weather in Florida is sunshine and fun, and the UK is a real challenge, and you need to be a great aviator to fly in it, is rubbish.
In Florida, the wx changes by the minute. You can read a METAR, decide to go, get to the runway, and find the wx completely differnt to when you began to taxi. It really challenges your descision making, and wx interpretation skills.
Also, coming in to an airport, the wx is equally changable. You can plan on returning to KOMN - but find a massive TS in your way, and have plenty of real life diversion experience.
In the UK - yes it rains - it rains for days. But the wx is generally settled compared to Florida. Which is great experience if you want to fly airline - look at the crazy wx on mainland Europe this week.
Also, the airspace is busier than most UK fields can only dream of (think of those £££ to be made in landing fees!). ATC get extremely busy, changes are common, and a challenging circuit are great experience. KOMN is an extremely busy airport, which I feel would make a great location for CPL training.
Yes I would agree, invest in the best you can afford, but that's very easy for a lot of people in here to say, as they are not paying for their training!