I like very high stats!
When I DM 5e/3.0/3.5/Pathfinder, I give the PCs 18, 14, 14, 10, 10, 10 to arrange as they like.
When I DM BECMI/AD&D1e/2e, I use this method: roll 3d6 and change the lowest die to 6, six times, then arrange as desired.
When I DM Dark Sun in AD&D2e, I use the last...