Obviously it's a little late now but the AGM batteries last 7-10 years or more.
Brand names seem to be meaningless these days.
I would keep your battery on a Battery Tender, however. They do work and significantly prolong the life of batteries.
A friends of mine has had the same battery in his 1955 T-Bird since the mid 1990s and it's always connected to a maintainer when not being driven.
