Ok so I'm going with an electric water heater. My plumber is suggesting I go with an 80gal bradford white he has and can give a good deal. About $100 less than what I would pay. But there are only two of us in the house with two full baths and a jacuzzi that gets little use. I think 50 gal would bemore than enough correct? He says the 80 gal will cost just about the same to run as the 50 and I will have more water avail if needed. Is that true?