Having worked for L3 and CAE (Before it was called that) I personally wouldn't go to either. No one's mentioned the fact that a lot of L3-trained pilots were actually trained by Leading Edge at Oxford, who do Integrated, Modular and Dual Licence. Almost the whole of the L3 Groundschool team moved to Leading Edge from Coventry 3 years ago. As for CAE, they're still living off the name they had as Oxford Aviation training 25 years ago (when I was there). As far as I know, Leading Edge, BGS, FTE and Skyborne are all okay, but you need to visit and if you fancy a place but don't want to pay more in skills testing, say so and see what happens. Good luck.