I took a Medex loan as a 4th year student - the payments were deferred for 3 years, and I am paying them now. For the $12k I borrowed, I am repaying $146 per month for 20 years at 10.25% interest. Will repay it first thing once I complete residency in another 20 months. Didn't want to take the loan, but unless you have family support to assist with interviews/relocation, this is one of the few options. I agree with a previous post that it is better to take the money and be able to apply broadly to get into the field you want, as well as assist the relocation which, in my case, was several thousand dollars.
Also, I looked at it that my first year out of residency will be $135k instead of $150k - still a very good starting salary.