I am trying to decide whether to go with a tankless water heater and would like some input from people that have used them. I have a large family and like the idea of continuous hot water. What do you like about these sytems? Are there any drawbacks? Any regrets with going tankless? My existing tank water heater is in my garage. Would it be ok to put it in the same place or is it best to move it indoors? Any idea on installation costs/difficulty? Any recommendations on brands? These units are quite a bit more expensive than a tank water heater and I am trying to rationalize whether it is worth the extra money. Any input is appreciated.