I could tell you some tales about CFS that would turn your hair white. Let me put it this way, I've been an FI for a fairly long time and I feel very comfortable in recommending either of the two remaining schools at CBN.
The quality of the instructors is not up for question at either place. Mind you I certainly have no issue with any of the instructing that I've seen from either of the Prestwick schools for that matter.
There is only one place where I had any concerns about the teaching and the way things were done and that place has just gone bust. Whilst many of the FI's were good, the problem did not lie with them but with a certain person who ran the place, the very same one who spent his time rubbishing the other schools. He offered me a job once. I decided not to take it after meeting him and taking a look at the setup.
I would never recommend a place I didn't think was any good. I've seen enough rubbish schools to know what I'm looking at.
I spent 3 years as CFI at Leading Edge and I can assure you that the teaching is top notch there. Graham who's CFI at Border used to work with me at LE and he's an excellent instructor too, as is Paul. CBN is lucky to have 2 very good schools.
If you want to take Ted Veitch's word over mine, then go ahead, but I know where I'd send people!