Been using the Autozone Duralast Gold. The Batteries in my 01 F250 have been lets say needing replacement for 6 month, so I check the prices at AutoZone and the wanted $159.99 for one. Check Sam's, $105.34, I need to go to Sam's anyway!
I've used Everstart from Walmart with excellent results for years. That said I have a couple Rural King batteries in use now due to the fact of price and that they have dual terminal batteries that I can switch between vehicles if needed.
Ive been buying from Walmart. since Costco is no longer cheap, I figure it’s a roll of the dice anyway, so I shop on price. I’m not going to pay more than 80-120 when I don’t have too. I do check to see what Costco has though.
They are all made by a couple of companies, so they are about the same. I think Walmart has a free replacement policy instead of pro-rated, so you could buy once and just trade them in when the get close to the end of warranty.
I usually buy Interstate batteries. Needed one for the C6 last year and they were out of stock. Checked a couple times and nothing. Bought a Duracell from Batteries Plus. It is a POS. Car sits for 8 days and it is dead.
Surprised to hear Walmart again, but they always get ranked highly in the battery tests. The oldest battery I have on my property that still functions is a Walmart deep cycle that's in my front end loader. It's now 11 years old, and still starts, even after sitting for months and months unused.