I've been a lurker on PPRune for awhile and have yet to read a positive post about PTC and I would say that there is rairly smoke without fire but to be honest I think that anyone going for flight training is old enough or at least should be mature enough to make their own decisions.
Therefore I would say that you do your homework and visit these schools, talk to the instructors and students and get an idea of the place before handing over your money. There are plenty of them so you can afford to shop around.
Use a little common sense guys.