So I've decided to go w/ T.H.E. for my Stafford loans. Regarding GradPLUS, I'm digging T.H.E.'s incentives, and the private lenders do seem enticing, but...
The only reason it seems to me to go to a private lender for GradPLUS would be for the lower interest rate. I have great credit, so I might be able to get these rates. But with private lenders, their repayment incentive qualifications are more strict (ex. incentive is only available after 12+ on-time payments as opposed to THEs 60-day-delinquency rule), the interest rate is variable, the loans default to next of kin upon death/disability (I don't plan on dying, but...), and other lame stuff. Plus I think I trust a non-profit lender more than a for-profit lender.
As of right now I'm leaning towards T.H.E. for pretty much all my loans including GradPLUS, and if not them then some other non-profit lender.
Hrm...