As noted solid really solid like an isolated pillar to bedrock to avoid vibration from foot traffic or fan or camming over a press on the same bench seating bullets alternately with charging cases is better.
Different measures for different powders and different loads. I have a mild preference for a load that is midrange in the measure for most loads as in the Redding line. Harrell's has offered different sizes over the years. I have a 50 grain variation for varmint cartridges. I have an aftermarket weight replacing a role of quarters in a Little Dandy. I haven't tried one but I hear the LEE is good for pistol loads with flake powders. A Quick Measure lives up to its reputation for large drops of extruded powders.
I suspect but don't know that consistency counts more than double tap or single tap or other variations - to go along with no single best way is universal.
