I went sit-down on wheels, but for different reasons than most here. I have no inner ear balance(equilibrium problems), which means that when the lights go out I go down. I was told at Mayo Clinic that we have three senses of balance. 1. Is site. 2. Is feel. 3. is inner ear. You can get by fairly well without one, but not so well without two. So, when it gets dark I have lost both my inner ear and sight and that spells trouble. When I designed my 8'x11' darkroom I put in a linoleum floor and "bar" height counter, sink and enlarger shelf. I now use a cushioned bar stool on wheels and it works perfect. I have two 4x5 and one 6x7 enlargers along one side and the sink in on the end and it works just about perfect for me, but like I said earlier, I have no choice. I have two pull long pull cords for my lights, one by the enlargers and one above the sink. When I pull the cord for lights out a sensor on my safe-light automatically kicks the safe-lights on. The only time I stand is to focus my 4x5 enlargers and all I have to do is hold onto the counter with my left hand while I focus for a few seconds and I'm fine. I think I would go this route even if I didn't have my medical problems as it makes my time in the dark much less fatiqueing. Just MHO of course.