Vintage blacks are smoother and in the few that I have the spring rates are a bit lighter, others say the same.
..It was strange, a few years back it seem to become the 'in thing' to bash on blacks and say that you hated them and could not use them because they made your fingers hurt.
But I kept on posting (I expect the posts are still here somewhere) that I did not have this dislike for blacks and did not understand all the hate. After some time others also said that they had boards with blacks that were nice and others they did not like...
It boiled down to me getting a brand new, (at the time 2010/11 iirc) G80-1856HQMGB which to this day still sits in its box after using it for a few days, but I have two older black switched boards plugged in and being used just as they have for 10+ years.
I dont wet lube mx switches it only attracts dust and grit.