Glad to see you are back to bowling. I just realized, it's been about 15 years away for me too.
My advice is to get your physical game back to where it feels natural again. If you can work with a coach, all the better. Review bowling specific exercise and stretching.
As for equipment, consult with a well respected/recommended PSO. Bring your favorite well worn bowling ball with you, so the PSO can examine it, bring some notes of bullet points to ask/discuss. If the PSO can watch you bowl, that's a PLUS.
Bare in mind that you have most likely changed in some ways over that much time.
A good PSO will analyze your hand, strength, flexibility, size, etc.
Spend money sparingly on equipment until you have regained consistency are reestablished your core foundations.
Practice with a purpose, don't scoreboard watch!
As for equipment - BJI Ball guides in separate annual PDF by year 2010 - 2019
https://www.bowlersjournal.com/annual-b ... s-archive/
I hope you've rekindled a flame that will never go out.
Enjoy the ride.
It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so
There should be a rule of war saying you have to see someone up close and get to know 'em before it's ok to shoot 'em