Depending on the terms, it may even be better to get a 20 or 30 year loan and pay it like a 15. When it is all said and done, your effective interest rate could end up being lower. Plus, you have the benefit of having a lower payment to fall back on in case times get rough.
Personally, I got a 30 year loan and should have it paid off in about 10-11 years with how I am accelerating the ammortization schedule with extra principle payments. I thought having that flexibility in payments was worth it in case something happened.
that's the way to do, pay more and get it down faster. i also read if you pay your mortgage biweekly you save thousands and thousands on interest fees.