Arrow vs. 3P: which one is better at distributing weight?

I ordered a Hensley, they shipped the wrong ball size. On my way to return it (I live in Michigan about an hour from both Hensley and ProPride), I stopped in at ProPride. I liked the product and they were about $700 less than Hensley at the time. I ended up buying the 3P and getting a refund for the Hensley. Sean of PP is absolutely unparalleled in customer service and support, too.