Everyone has their take on this and everyone should do what they feel is right for them.
I bought from 9 different companies at certain time of my life, then reduced that to half as the prices increased and life changes....
But today, I picked one company that has two brands for the sake of simplicity, performance, and quality. These balls match up well for me and the different conditions I currently bowl on. My "bag" is much smaller and there's more room in my storage.
I own a total of 6 drilled balls. Likewise, I really don't have "gaps" in the bag since owning a spinner. And, I buy balls for whatever reason after the bills are paid and the kids are fed lol, OR they were given to me. I'll use these balls in the future that's for sure.
Lastly to the OP, if you have the money, try different companies. Buy new older models and test them out. Or, buy used ones. Also, start with a benchmark ball. Just don't buy balls because you saw it on TV, or it's the next hooking ball, or it's a HYBRID. You'll get lost, start in the middle IMO and build from there. some companies tend to be more skid/snap in their lines and some companies have more even or smoother ball motion in their lines. But choose wisely or you might get stuck in a cave with an old knight. Good luck...