"There are almost as many ways to brew as there are Homebrewers."
I'm disabled and have to adhere to some pretty strict ergonomics and even then I tend to do things that my body should not be doing...one of the things is handling heavy loads. My favourite fermenters are my Fermonsters and Sankes. Like in
@Hunky 's picture, I have a smallish laundry sink that I do many brewing tasks in....to the left of mine is my washing machine and I've taken my full-sized and heavy all steel 15.5G sanke, set it on a sponge pad on my washing machine, poured sterilized water in and swished it around to tilt it over and harvest yeast in a pitcher in the laundry tub, and then proceded to wash it out with a hose (followed by PBW soak and more rinsing) in the laundry tub. My physical bar is very low so if I can do it, most others can.
.....just sayin'...but I think we've given the OP a dizzying array of options!
My personal recommendation is still: Start Cheap and see what you can do (with my own bias toward sanke's with no extra attachment other than a head with a floating diptube) and see how you feel with it. (Biased side note: Poly top/bottom kegs are really lightwieght and easy to handle.)