I generally stock up on Energizer batteries by buying them in the bulk
pack from Home Depot.

For AA Energizer Max Alkaline cells, a package of 36 is $9.75 or $0.27
each. AAA, C, D and 9-volt batteries are similarly discounted. Home
Depot seems like an odd place to purchase batteries, still they have
the best prices by a wide margin.

I've personally had bad experiences with Duracell Copper Tops (very
erratic cell life when used in series), so I switched to Energizer and
have never seen that problem again.

let me clarify what I mean by a bad experience. My hand-held Lorain
receiver uses (IIRC) 9 AA cells connected in series. Using Duracells,
I've twice had one of the 9 batteries prematurely fail, with the
remaining 8 only partially discharged. Consequently you replace all 9
cells. The first time this happened I was just sitting on my boat
playing with the Lorain. The second time it happened was in the middle
of a line squall while 4-miles or so offshore of Cape Ann in
Massachusetts. When I asked the Lorain to take me home, it faltered
and quit due to the premature failure of one of the Duracell batteries
at a time when I was nearly knee deep in water in the boat's cockpit
(it's a 23' Hutchins Compac cruising sailboat). As a result, I was damn
lucky to reach the shelter of the Annisquam River while believing I was
entering the inlet to Plum Island Sound at Ipswich under nearly zero
visibility conditions.

It surfices to say that I will never again purchase a Duracell battery.
They are not reliable. Energizer seems to be.

Just my experience, which I thought that I should share with others.

Harry C.