I live in Sacramento, CA and I am in the market to replace my 14 year old gas water heater. It is a 75 gallon direct vent gas water heater that is situated in our garage. Due to the new 2105 energy regulations, we cannot get an exact replacement of our previous water heater. We have had 3 different contractors come out and provide estimates to replace our existing water heaters. They all provided quotes on installing the Rinnai Rui98i, with the lowest coming in at $4,125 to install the new one (requires a new gas line) and remove the old one. They all also quoted us installing a new 75 gallon gas power vent water heater, with the lowest quote at $4,000. I am leaning toward going tankless, but wanted to get people's thoughts on this. Also, the Rui98i is part of Rinnai's Ultra Series and I wanted to know if should stick with that model or if it is ok to go with a cheaper model from the Luxury or Value Series. I really appreciate any feedback you can provide.