Personally, being a speed dominant player with average to low revs, I love to see a ball that goes clean trough the fronts with a good midlane read, I love smooth, predictable balls. Being a lefty I can bowl almost in the same spot for all night, without needing to open the lane or my angle, so I usually don't need to change balls or shape in order to hit the pocket.
As every other bowler, we all want to know what the ball is gonna do and how is gonna react, a consistent motion, skid/flip can be too jumpy and even if it looks pretty cool is not as consistent as a long arc. For me those are the keys of a sucessful ball.
A controllable, smooth (I know, I said smooth a lot lol), a ball that you can clearly see go through the 3 phases: skid, hook, roll – smoothly. Personaly I like solids more than pearl or even hybrids, they seem to be more versatile and they can have surface adjustments easily.
Thanks for taking the time to read all of our responses! I am by no means an expert, just an average bowler who loves to ball at all times and someone who everyday is getting more into the game. I just love it. I hope my opinion can help!
Thanks!