I am looking to replace my water heater, but I'm concerned about which to buy. An aquaintance contractor tells me he uses Bradford-White products exclusively. I reside in the upper midwest, where Menards, Lowes, and Home Depot are the prominent home centers. Specifically, Menards carries the Richmond line of water heaters which is manufactured by Rheem, a highly rated company. My question is, do I need to spend $200-$300 more for a contractor line versus a product that I can purchase myself at the home center. Secondly, I am undecided on whether to go with a powervented model or an atmospheric. I do have an atmosperic now, but wonder if the powervent would be a noticeable energy saver. Any knowledge and input would be appreciated.