I've just refinanced with Third Federal - thanks Wendy and Christine. I was somewhat apprehensive, as they were offering the lowest rate available at the time, but everything went very smoothly. They were up-front about their fees (not too high), and everything progressed at a reasonably good pace. Our LTV was ~25%, and credit scores very high, so that probably helped.
Somewhat unexpectedly, we received a $100 Home Depot gift card from them today - a nice touch.