Credible showed rates substantially higher than what local banks were offering for us. I also gave lendingtree a chance (with a google voice number, and boy did they ring it off the hook... thank goodness it wasn't forwarding to my real phone). Most of the rates there weren't competitive. One was close, but they had higher closing costs than the local bank.
To top it off, said local bank (with which we did the original mortgage) found a way to waive the appraisal. Our loan costs will be <1k, which is looking like a 3.5 month payoff for dropping 1.4% and extending the loan 4 years.