After having too many die hard's "die hard", optimas are the way to go. though a few people have talked about the blue tops, stay away as they do not work (at least in my experience) for road vehicles too well. as for the red and yellow, I prefer the yellow, though have never really had a problem with either.
Though if you are bound and determined for a lead-acid, the stinger accessory batteries make a great primary battery as well...