As you are about to find out, most people will recommend the school that got them through. A lot of it depends on you and your circumstances, budget etc.
You are already doing your PPL so your next step after that would be hour building. I would suggest using this as a way of visiting a few of these schools to compare and ask the relevant questions.
Nothing wrong with asking on here though as you can find out things you wouldn't necessarily hear elsewhere but I would do a search as each of the schools you have listed probably have threads dedicated to them.
Also, try not to look too far ahead. concentrate on your PPL and then hour building & ATPL exams for now. Things can change quickly.
Get you class 1 before going any further and good luck.