I've trained at Flight Safety in USA and at Sesto. I may have been lucky but the training that I had at Flight Safety on the 6 occasions that I was there was excellent - knowledgeable instructors who knew how to teach.
I have not been to Morristown yet but found the training at Sesto to be very poor and so disorganised it wasn't funny - maybe I was unlucky that time? The light blue flying suits that the instructors wore were very nice though.