The best thing you can do is head up to the schools and see the + & - yourself.
Sometimes the first impression and feeling you get from a school just by visiting it is the right one!
Ask students and instructors questions, see their facilities, aircrafts, and ask for prices and offers.
Come back home study what you have gained and finally decide.
All three FTO you have mentioned if you are considering to head for the integrated route you must first pass their Selection Tests which some of them are not easy to pass if you do not study and practice good enough.
I personally also recommend you to google for Skytest if you don't know it already.
Hope this helps!