Let me add one other thought here too. In the case of the scope and mount I'm using, lighter is not necessarily better. If I use really light eyepieces, I have to drop the tube further back in the rings so that the objective does not overwhelm the star diagonal/eyepiece. So in that situation a lighter eyepiece forces the diagonal closer to the ground - which can be less comfortable. When I put in a heavier eyepieces, the tube is placed such that the eyepiece can be higher above the ground.
I can also adjust for this by adjusting the legs, but the point is lighter can create its own problems.