I bought 4 Auto Zone Duralast Gold batteries for all the vehicles in my family that had batteries over 4 years old I liked their cca's and could not beat the wholesale price either..Plus a 3 year warranty. I looked at the Costco Interstate batteries but they did not have the cca's the Duralast Gold has but they had a slightly better warranty (42 months).. I had good luck with Duralast Gold Batteries in the past i hope they are still built well. Anyone have any input?