I replaced the interstates, from Wal Mart about every eleven months to maybe fourteen it seemed, in the daughters pick up and Son's car. Those were the top of the line in the sizes for their vehicles, not deep cycle batteries.
lead cost money. One quick reference for same category of battery, the heavier one will generally last longer. Thick lead plates last longer.
There are battery comparison charts here and there.
The consesis, I'm taking a risk here, is the Trojan deep cycle lead acids lsst the longest and some others equal to.
The Life Lines in the high dollar batteries seem to be the top. there is probably a cocomparimparison chart someone can post.
in my pickup I'm running the Exide. The first one leaked at the post and did some damage and Batteries Plus said they all did that until I talked with his boss.
The days, of Sear Gold Series and Delko and so on as being a no questions asked relaible long life batteries seem to be gone. You have to comparison shop more and more and listen to those you know or go on your recent years experience.