get the lowest mortgage interest rate? Can anyone help me with info about getting preapproved (I have excellent credit) and how to lock in on the best rate for a mortgage? Does who you get preapproved with affect your final rate? Should I get preapproved through more than one lender? 9 years ago, we were preapproved for a home, and we ended up paying a 0.375 % higher interest rate than what the average rates were at the time. I was told they just had to take whatever rate was available on the day escrow went through. I felt cheated, but it was too late, the loan had gone through. So this time I am trying to be more careful. Also, I can't go through my local office, since we will be purchasing a home in another state. Of course, there are the big lenders with offices everywhere, but I am afraid they won't give me the best rate. What do you think?Thanks for any info you can share with me and for your time

Thanks for your answers!To make sure I got it right: I'll only get pre approved one place then, probably through my own bank. And I can't/shouldn't lock in at that point, but wait until I have a contract in hand on a house. At that point, I can still shop around for the lowest interest rate? Or do I have to go with the lowest interest the bank I got pre approved with offers? Is it true the bank can only raise the interest rate 1/8 over the good faith estimate it quoted me at the time I applied for the actual mortgage? And do I have to lock in to get that, or is that automatic? Thanks again, you've all been very helpful!