I noticed that my 4yr old auto battery has a bit of acid leaking out the top. It's a Motorcraft probably made by JCI. Thinking about replacement even though it tests decent 590cca. Out of 750 rated I believe. I see a Duracell at Sams made by East Penn for like 105. Is this Similar to the Oreillys Superstart for around 150 or the Duracell at Batteries Plus? Is the Samsclub battery cheapened in quality due to a much lower price?