My choice came down to Panasonic and Broan. I selected the Broan becasue it had all the features I wanted, and was in stock locally. It senses humidity and turns the fan on & off based on that. It also has a flourescent lamp, and a night light. I also like them quiet... but I wouldn't go nuts. If you can't hear it running you can't tell when it's broken. I can't remember how many sones mine is - you can hear it - barely.
I am using an LED bulb in place of the standard 4W nightlight bulb. The LED bulb was about $7 and has a slight bluish cast to it, but draws less than a watt, and should last a very long time. I rigged it to a photoswitch pointing at the window. The regular flourescent lamp is wired into the same circuit as the overhead can lights. It all seems to be working well.