Like you I have looked into many a training school.These varied from Delta Flight Academy,Naples AIr centre,Cabair,OAT's,Jerez and stapleford.
From these I've narrowed down to OAT's or Jerez which at the moment is more looking like OAT's everyday.Personally I'd be going along the full-time modular route which suits me.Some topic did cover Staplefords ground school with the London Met Uni which wasn't oerwhelming in praise.But what I would say is search on these forums for references on them.Also go to the individual schools.In 2 weeks I'll be doing my class 1 medical and while over in that direction I've got a visit to OAT's booked.
All the very Best