we are going to be getting a new water heater. with 7 people we use a LOT of hot water. Our old traditional style heater is old old old and just terrible on our elec bill. Have been advised to think about an 'On Demand Hot Water heater" can you tell me the pros and cons? which is more energy efficient? like em love em hate em? I gotta tell ya.. the thought of not running outta hot water after the boys showers sure sounds nice! Hubby thinks they wont heat water hot enough. whats your thoughts? Thanks!