I personally see these companies as roughly equivalent, although posts on here make me feel as if CTC maybe a better choice if im ever privalidged enough to have that choice. - CTC VS PTC??
PTC and CTC have nothing alike, PTC is a small flight school that charges a lot to get your ratings, CTC is probably more comparable to Oxford or FlightSafety.
Look into it a little more, PTC will accept you if you have the cash available to spend, CTC or Oxford will not.