A good friend (Tyler) bought one from these guys and had really good success with it.

http://www.antiqueautobattery.com/

I just bought a couple batteries from them last week and they were extremely nice and helpful, but I won't know the quality for a few years.

My friend has gotten good life out of his (I think about 4-5 years or so) and when he thought he needed a new battery this year he went back to them to order it. Instead they told him before buying a new battery to try doing a Memory Reset. He did the reset and now his battery is working like new again. Not sure if the reset only works on their style of batteries, but that was great of them to help without selling him another battery.