@tube77 you'd actually be surprised at the varying levels of feel among even the highest level athletes. Most can tell that they 'like' or 'dislike' a given base bevel, but feel between different angles eludes them. That said, my experience recently, and over the last twenty years is that consistent, non-variable base bevel (regardless of hand or machine finish) has been the consensus for a larger group of athletes at every level - especially with SL and GS skis. There are for sure some athletes who have preferred variable base bevel - Marcel Hirscher was one of them until the last season he competed - but typically they are using it with SG and DH.
Currently, except in instances of machine component failure, the standard for edges finished in the vast majority of ski factories and factory race rooms is consistent, non-variable base bevel.