Recommended brands for 6v GC batteries

Our Duracell SLIGC110 batteries are approaching a year old. They are performing adequately. We purchased them at Batteries + Bulbs. Right now, there is a 10% off deal if they are purchased online and picked up in store. The price is listed at $99.99 each. Take $10 off and the price would be $89.99. We had to pay a core charge since we did not have any batteries to trade. I was able to take advantage of a military discount which helped offset the core charge. They might not be the "gold standard," but the price was right for us. I consider them to be a good value.

Trojans are widely considered the best, but US Battery makes a comparable product.  Exide is another brand. All three of these companies actually manufacture the batteries they sell.  Interstate, Duracell, batteries plus, sams, etc do not manufacture GC batteries.  If I were buying new GC batteries, I would buy either US Battery or Trojan

Based on my Google searches, it appears that the Duracell batteries are manufactured by Deka/East Penn. They weigh 64 pounds each. I saw one report of a person getting 8 years of service out of one. We have two of the Duracell 230Ah batteries we bought from Batteries+Bulbs on our 179, but we haven't really put them to the test yet.

IMO, Trojan T-105s are the gold standard. Interstate GC2-HXDs work well. Others like Sam's, Costco, even Duracell are cheaper, but.................  Weight is an indicator: the more weight, the more lead, the better.