What would be the grips that you consider most comfortable in pistols and in revolvers? I mean wooden grips, rubber grips etc.
It varies quite a bit, and it depends on the gun.
Looking over my collection, I tend to end up with hard (or not very soft) rubber grips, with a checkered texture. Ex.: Pachmayr Gripper on the Model 19, East German milsurp grip on the Makarov.
Hogue rubber grips I've tried I've ended up deciding were too soft and/or too big.