First, read this:http://www.federalreserve.gov/pubs/r...gs/default.htm
From there, I'd ask (or demand) that both the bank and broker provide you with their bottom lines in terms of interest rate, monthly payment, closing costs, any fees that are rolled into the loan and any extra costs (like more insurance or points) to get the rate or payment they're quoting you. If they're unwilling to give you firm figures, tell them it was nice doing business with them and move on to another lender.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher