i do believe this comparison is purely of personal convenince as the two FTO cannot stand any comparison.
OAT has a high reputation and standard of instruction both for ground school and flight training which Stapleford has not and has never had.
If i were you i would personally get a greater in depth look at what is available. Go there have a chat with the student and try to get a picture. Remember that pilot and wannabe are generally quite proud so they never say the complete truth therefore take it into account.
Personally i would consider OAT, Bristol, adn Bournemouth
Kind regards and best of luck
PF
P.S. prices and quote are a pure illusion, never choose a FTO by its price. Certain school take real advantage of that to atract and hook their customer then, they start to peel them off to their bones.