Diehard Advanced Gold are now AGMs. Not a fancy "look at me" battery, but most sizes are highly rated by Consumer Reports (if that holds any water). They also are pretty reasonably priced. And if one dies prematurely, at least for now, it's as simple as taking it to your local Sears (until they're out of business) to swap it.
If you're looking for fancy/expensive, then I'd probably look at an Odyssey.