I did some legwork on Wal-Mart batteries
they have 3 tiers of flooded, and then an agm
I specifically looked at group 65
the "korean" or any " 'Stan. " battery is junk, it may or may not have the red/green electrolyte eye
the "made in Mexico " batteries, group 65, are identical weight, identical case markings, are stamped 650 700cca depending on "grade"
Using the midtronics super duper computer analyzer, all three of these batteries put out 880-900cca. Consistently. These batteries also have "jcha" in the serial number. I've tested maybe a dozen of these batteries, bought 5 myself, and am confident that this is a top shelf Johnson Controls battery being sold with 3 different warranties for 3 different prices.
$55, 75, 94
Now, if you get mathy about it, and keep the vehicle for three long haul, and warranty the $94 battery at the end of its free replacement period, you will get the most months per dollar.
But, if you need your 7.3 to start now, and don't want to play warranty games, you can get the same battery for $55
*I verified that the $55 korean battery, on the same shelf, with the same sticker, barely made rated capacity
Next up the "platinum " "gel " battery, in group 24, also appears to be the top shelf Johnson controls that is sold under a hundred different labels. I didn't crawl as far down that rabbit hole, just enough to satisfy my curiosity and get one for my DD so i don't worry about corroded cables. I got spoiled with the AGMs in my tow rig
*attached is a picture of the readout on a $55 group 65