Im going through Total Higher Education.
My credit score is >760 and I still was getting offers of 10+% with a cosigner with 800+ credit...
NO THX private loans.
PS - The Grad plus loans new rate kicks in july 1, talked to someone from fafsa and they said the rates are going up so little that its insignificant.
PPS - Gradplus is 8.5 fixed, most private loans are variable, keep this in mind.