Jim,
I have the Blue/Black Polar Ice, which is SUPPOSED to be a pearl/solid urethane combination. I asked Buddies about this (I bought it from them) because the box in which it came did not say it was a hybrid. It does not look like it has solid and pearl in the cover. It "appears" to be all solid to my eyes.
Remember for urethanes, polish makes them go longer, but, unlike resins balls, polish makes them hook less with less backend. Resins have significantly more backend when polished!
The Mix and the Polar Ice use the same coverstock, U1S, and the same pancake core. One is all pearl, the other is all solid and the Polar Ice is a hybrid. With respect to these three, the XXXL is plastic with a true, but very weak dynamic core. Plastic normally goes longer than urethane and hooks less overall.
I see little true difference between any of the urethane balls except in length. I suspect there will be much less difference in overall hook than there will be in length, with the Solid hooking more than the Hybrid, hooking more than the Pearl, but maybe by 1 board among them. A rev dominant player may see more difference between them than a bowler with matched speed and rev rate. I doubt a speed dominant player will see any difference between them.
All 3 urethanes will probably hook more than the XXXL except on the very driest of lane conditions. Then its a toss up, depending more on the bowler than the condition. As a rev dominant bowler, I had a hard time making 10 pins with a dynamic cored, plastic ball which was drilled to maximize hook on dry lanes, with my normal release.
FYI I recently gave up on the Polar Ice as a spare ball because it hooked too much on dry lanes with my normal strike release. I went back to a plastic, pancake core T-Zone.
If I had to suggest something for you, given your statements above and given your previous requirements for balls before your operations, I'd suggest the Mix Solid or the Polar Ice. They will hook, small but controllably, unless the area you're targeting is exceptionally dry. Both have a high gloss polish for length and control. You can always sand them to make them hook earlier and more, if needs be. This is no guarantee, just my best guess-timate.