I run about 30- 40 hives. I had rotator cuff surgery on oct 2 and am having the other one done tues 29. I have been running dbl deeps all of my life. I live in northern IL. I read your threads about using all 6 5/8 equipment and listening to you guys and gals it sounds really great as far as moving honey, brood, pollen around. I talked to a commercial beek and he said I might have trouble getting a good brood nest. They don't have any problems putting brood in my honey supers. I'm also not getting any younger so less weight would be great.