You should check out SallieMae if you haven't, a federal student loan provider. They have three types of federal student loans for undergraduates and few additional private loans if you happen to not qualify for the federal student loans. The private loans always carry a higher interest rate but may be comparably lower than private financial institutions.
SallieMae.com
Keep in mind that most if not all the student loans out there today will be about the same if you are comparing private student loans because the length of the loan is short and the loan amount is not large in your case.
If you really desire a low interest rate, it may be an inconvenience but you could ask your parents to tap into their home equity and give them a promissory note.
