Florocarbon Preference

This may be an old topic, but I thought reading on here somewhere that a
polomar knot shouldn't be used with some brands of florocarbon line? Was it
Berkely by any chance. It's the easiest knot for me to tie. I developed
arthritis bad in first knuckle of my index finger on right hand after
breaking it last year. Now very difficult for me to tie especially. So
looking for line that will endure that knot. Any thoughts and any
recommendations on florocarbon both for leader and spinning reel would be
appreciated.

Also any recommendations on spinning reels - mid size appreciated as well.
Thanks all.

--
God Bless America

Josh The Bad Bear