maytag water heater

My current tank type HW heater is about 11 years old. I'm going to replace it. I've been reading up on Natural Gas water heaters. I had the opportunity to spend 2 weeks in a house with a tankless and while its ok, and probably cheaper to run it has its quirks. At first i thought i might go with it but after 2 weeks both me and my wife could see it wasnt as smooth and steady as a tank type water heater and there is a longer delay getting hot water out of the faucet than with a tank type. So, I've pretty much decided I want to buy the Maytag HRN112 40X (or 50x) but I cant seem to find a place to buy one online. Also, Maytags store locator is useless... Any ideas? Thanks Eric