Scroggs
Yes it may be irrelevant who you do groundschool with, but if a candidate is looking for a school to complete all the training with then maybe the initial choice does become important.
I would say to anyone be carefull and if OAT is a first choice (I did my groundschool distance learning there) then make sure that there is some committment to take you all the way, because I found out that policy can change very quickly and leave you high and dry!