Great to see so many people weighing in on this!
I picked up on insoles after taking up running five years ago (I'll be 56 this year). I use ASICS Kayano running shoes with third party insoles that give my feet better support than the ones included with the shoes. I probably would not be able to run 20-30 miles a week without the right shoe/insole combination. I live in Sweden and it seems like insole brands are different here, but the ones I use cost roughly $75 a pair. They seem to do the job for me.
I have only used Dexter SSTs and 3G Tuor Ultras, but after a recent six hour tournament in my Tour Ultras and the same insoles I use for running, my feet felt a bit more tired that I am used to. So I thought I had better see if there are any bowling shoes with a bit more cushioning under the foot in the market. A neutral shoe with a bit more cushioning under the foot could be better than a neutral shoe with less cushioning under the foot. I doubt if bowling shoe manufacturers would make shoes with pronation support. But it would be neat to have that choice.
I will look into the Brunswick TPU-X shoes.