I am pretty strong for a woman, but at 55 with budding arthritis in one thumb, I found the 10 frame large Langstroth supers too heavy to easily move around, and did notice that the bees were very reluctant to use the outside frames anyway.
So I am thinking of making all my new hives from here on in 8 frame medium box based. I have one top bar hive to try out for 2013 as well.
But I would like to hear back from beekeepers who have made the switch to 8 frame medium. How is that going for you? Tips/tricks/advice???