Rather than a 5 oz. rectangular bar, the new molds yield a square bar that's 1/4 to 1/2 ounces larger in size. Rest assured this change is not founded in the pulling of that old retail trick: making the product smaller but charging the same price with hopes that the consumer won't notice. At 5 oz., my bars were already 25% larger than the industry standard 4 oz. bars so yes, bigger is better because most bars will not see a price increase.
FYI: In the coming weeks and months you will notice that the size and shape of my soap bar has changed as I transition over to new soap molds. The bar on the left is my current bar, the one on the right is the new bar.
Replacing my soap molds is a substantial investment that I believe in the long run will pay for itself in time savings because the new molds allow me to scale up soap production; I'm able to make larger batches of soap, faster, and can cut the soap logs into bars more efficiently.