What guitar did you have SS frets on? Was it a Core model?
I find CE's in general to be brighter with standard frets. That may have something to do with Maple Neck, the bridge and Bolt-on construction. SS may have a small impact and on 'core' models, the fact that these aren't as bright naturally, may have a smaller impact because the construction in general is warmer and fuller. It may have more impact on CE which are bright naturally.
I do know that some people haven't liked SS on their 'classic' guitars like a Les Paul and Teles. I know Pete Thorn for example won't put them on certain guitars yet his Signature has SS frets.
It would be interesting to know what strings PRS use. I know they are specially made by D'Addario but wonder if they are all Nickel. That may well reduce PRS fret wear because the strings are 'softer' than the Nickel alloy PRS use in their frets. According to PRS, the Nickel they use for frets are not the 'hardest' possible but the next one down but still much harder than 'standard' Nickel frets. In theory, if you aren't using SS strings, then the Fret wear on a PRS should be kept to a minimum because the frets wear the strings and not the strings wearing the frets.
Stainless Steel frets are not exempt from wear either BUT can last indefinitely if the Strings you use are softer. I have seen pictures of a String wear on a SS fretted guitar. It was on the wound strings where the windings have almost worn through to the core and the fret looks just as 'perfect'. Its a clear indication of the difference between having a hard material fret and a softer material string. If you use SS strings though, then these can (and do) cause wear on SS frets.
It seems that the most 'popular' strings are SS with possibly Nickel wound on the thicker 3 strings. To me, that says that fret wear should be a concern for the majority of players because their preferred strings are made of a 'harder' material than their frets. If they use Capo's, press hard and do a lot of bends/vibrato, they will wear their Nickel frets out unless they opt for a different set of strings. Doing that though will change the tone slightly and should reduce the life span of strings, but then so should SS Frets with Nickel strings - just faster than 'hard' Nickel frets would.
There are of course lots of factors that determine 'fret wear'. I am sure we have all see 'vintage' instruments with little fret wear - ok so they are now lower but still not that low that its almost a fretless guitar - that has been played and played and played - with Nickel frets because that's the way guitars were always made. However, some seem to burn through frets in a few years and I think a lot of that has to do with SS strings - strings made of harder material to get them to last longer and longer. I think that has a LOT to do with Guitarists wanting SS frets more and more. Not that I am against SS frets, not at all. I personally haven't tried them myself but the more 'research' I have done around Fret wear in recent years, the more I understand why SS is becoming more and more widespread, more in demand. When you look at the String construction of the most popular Strings, all SS with maybe Nickel wrapped around the bottom 3, you can see why Fret wear is more 'common' now and why its predominantly the bottom half of the frets because those Nickel frets are softer than the 3 SS non-wound strings.
This is why I am curious to know how the PRS strings are constructed. All I know is that they are a 'bespoke' design for PRS - that they are not NYXL's with a PRS name on the packet for example. I wonder if they are a softer material than the PRS fretwire...