I need to finalize my mortgage (75/25) no later than Monday. I've been working with one broker throughout the process, and decided to do some last minute shopping around. I found someone who could drop the monthly payment by about $14 on the second loan. My original broker looked over the estimate, but couldn't match their interest rate on that second loan. However, he did point out several items making up the closing costs in their estimate that he thought was inaccurate. This is such a pain in the ass. How much shopping around did you do?