I've bought many solid balls over the years and most of them hook too early and don't finish hard through the pins. I wanted to start a list of solid balls that have excellent back end motion and which aren't more than 3 years old.
1. Storm IQ Nano. Gets through the heads clean and make a huge move on the back end. There is no quit,
Sorry, Bud, but the fault isn't with the balls, but with you or whoever is suggesting/recommending the balls you are buying. They are obviously too aggressive for the oil you are facing, the style of bowler you are (speed, revs, tilt, rotation, etc) and the way they are drilled.
And it has nothing to do with the core specs. It all has to do with the ball, what is designed to do, how aggressive the coverstock is, how rough or smooth the surface is on the ball and how well it matches up to the core.
You or whoever is making these choices has to more thoroughly analyze the ball before you decide to buy and have to drilled. Also, maybe you need to have the surface of these "bad" balls, either made smoother or even polished. That could allow some of these "mistakes" to become very usable for you.
The Nano is a very aggressive coverstock (actually particle) and is finished to 4000 grit out of the box, but the core has very little flare. This allows the ball to get more length than would be normal for a particle coverstock, and then allow the particles to dig and make the turn. It's all in the balance of the cover, the surface and the core.