AFE Jeremy Pratt - lotsa nice piccies and not too much waffle. Depends on yer student really but the vast majority I encounter prefer AFE fer that reason alone. Ole Trev goes into a lot of detail (all good I might add) but not exactly..... errr........ what someone needs to be reading after a long day in the office prior to their 10th flying lesson the very next day.
It's only my opinion and like arseholes, we all have one so don't take it as golden. As I say - down to yer student really and their level of 'stick-with-it-ness'.
T.Thom for speccy types.
AFE for the others.
VFE.