I have been using Trend/Barton tool steel lifters. (they're a little different than directly from trend as the body has no groove/space in the middle)

The same set have been used on 4 different cams in two different short blocks. I use either Schaffer's or Valvoline 10-30 racing oil with no additional additives.

Currently using Isky 8205 springs.....I'd have to check my notes, but I think they're around 150# closed and #430 open