My stallion is the king of toys. If it can be destroyed though... he will destroy it. I haven't uploaded it to YouTube but we did a test one day of how long non-jolly balls would last.
The Gold's Gym regular ball from Wal-Mart lasted 4.5 minutes. The "extra durable" one from Wal-Mart which is a few dollars more lasted 2 minutes. My colt can pop them fully inflated. If he can't pop them within a few minutes, he seeks the little plastic plug and pulls it out. Therefore, no regular inflatable balls.
The "horse balls" that have the outer fabric cover last longer, but are very expensive. Also, the non-fabric covered ones will not last long if exposed to the sun (I live in so Cal, which we get a LOT of sun). They still pop
So far, only the 10" jolly ball can withstand my stallion... I don't know how rough your horse is though.
Here he is with the Gold's Gym ball, this isn't the destruction video but you can see once it deflates, it's a goner:
He still tears holes in the jolly balls, but they really hold up to his daily torture. I have NEVER seen a durable larger jolly ball, but I will be watching this post as my guy would LOVE LOVE LOVE something big. He does love to mount and roll around on the Gold's Gym balls during their brief lifetime. I would be interested in any type of toys, as my guy has TONS of toys. He prefers the jolly balls (in the video you can probably see the remains of flat Gold Gym balls, soccer balls with the soft outer coating shredded off, and the hard apple toy that he will play with by grabbing the tiny loop on but it hurts when he bashes it around so he prefers the jolly ball)...
Andrea