Costco vs Trojan Batteries

[Yachts66]

So I stop by my friendly chandlery to pick up some odds and ends and struck up a conversation with their battery salesman. I told him I was planning on buying Costco golf cart batteries and he had a cow. Well, he's a salesman, so I expect some of that, but he said his Trojan's were far, far superior to the Costco brand. I dunno, I've had good luck with Costco, but I'm always eager to learn, so.....what has your experience been? Are the Trojan's worth the extra money? In this case more than twice the price!

Thanks,

Thomas