I have recently helped three friends to pick FTO's. All three went to different organisations which suited what they were looking for. The most interesting thing was to phone up on there behalf and when i had explained my experience + qualifications the sales pitch was ditched and you got interesting answers. If you can try to speak to someone current in the training enviroment who can highlight traps for you. Some flying clubs might have people who will help even though it dosen't benefit them(i stress might). Anyway good luck.