I should note there is probably one other factor which is that depending on the shape of your tank and whether you are on flat, incline or decline, bumpy road, etc. your fuel pump may start sucking in some air which could cause damage or premature wear and I've read that gas acts as a coolant to your fuel pump motor so better to have more of it than less.
The most I can recall filling up is about 90% of my tank (23 out of 25 gallons).
Great Seinfeld reference ramu, loved that episode.
I know several people that would ride around with 1/4 tanks all the time because the decrease in weight improves fuel economy. Every person I know who did this had a fuel pump burn out.