Federal loans are the way to go. Even though the interest rates are high...mine are at 6.8% and 7.9%. They give you a .25% discount (whoopie) for setting your loans on auto payment. As other have mentioned, the big reason I have not switched to consolidation, is that the federal loans come with lots of options and programs if you ever need them.
For example: I am currently paying on a standard 10 year repayment. And paying more than the minimum payment. 1) If I want to skip a few months I can (because I am ahead on paying) 2) If I ever want to switch to the 30 year plan I can, so that my payments are lower. Which could come in handy if your expenses go up. If I switch to the 30 year, I can always switch back to the 10 or just make bigger payments 3) They offer forbearance and deferment periods that you can use (I think just once) of 6 months if you need to take a break from paying. Not the most idea, as interest will keep accruing, but if you can't pay for whatever reason, like you lose your job, medical bills, having kids etc