I realize that the flooded cell 6v batteries are the best choice for longevity but since I know myself and know how I treated my last set of flooded 6v batteries, I think that AGMs might be better for my lazy personality. I have seen reports of plenty of folks why get 10+ years from AGMs while flooded cells, which should theoretically last longer, typically don't because too many people let them dry out. I'm one of those people.
What do you know about any advantages of 6v AGM over 12v AGM though? Is there any?