Can any one tell me what kind of savings I could get from choosing either gas or electric to heat water? We are doing new construction and don't know which to do, we just want the most efficient way to go...

Thanks

You will have to do a cost based analysis for each type and pick the overall cheaper unit in both cost and usage. Check with your local utility since there is no way I can calculate a actual price for you since the incoming water temperature, number of uses per day, electric and gas cost all vary from area to area.

What are your per therm and KWH prices, including taxes?

Since it is new construction have you given any thought to a tank-less water heater? I had my doubts about them at first but I took a manufacturer specific install class and the theory just makes more sense to me. Heat the water you use instead of firing countless times a day to maintain the temp of a tank. Just something to think about.