Hi - there are a load of threads on this that you could look for, but I will give you my view. I did my CPL in Florida and I thought it was fine. I had British instructors and a British examiner, so apart from the RT and the airspace, it was pretty much like flying at home (assuming Scotland suddenly became completely flat and covered in orange groves!). The RT isn't that different - just some different terminology and procedures and it will only take a couple of hours to get used to it. I don't think the quality of your training experience is a function of where you do it - it is more to do with the quality of the school and the people who work for it / run it. There was a fierce debate about the IR though - some folk have been disappointed with the standard of training and found it hard when returning to the UK to finish off, but if you search for threads containing European Flight Training or EFT you'll find some of the info.
I was in Florida in December and the weather was great apart from a few windy days. I might have learned more by doing it in the UK, but I wanted to get it done fast and didn't want to wait around here for the odd flyable day to come along. I don't think my ability to make weather related decisions would be any better now that it would have been if I'd done it in the UK. You did your PPL here so you would have had to deal with crappy wx I imagine.
I don't know if airlines really care that much - again an endless debate (with loads to read if you search), but of the people I know who have got jobs, where they did their training wasn't an issue.
PM me if you would like any further info, but all your questions have been covered before...
Good luck,
Hufty.