The baritone is the best size for me. I don't have to stretch my short fingers to play, so no injuriesI studied classical guitar for about 7 years. I loved it but the student is drawn into that world of perfection. Nothing but perfection is good enough. You have to have thick skin. I do miss being in the local classical guitar orchestra playing guitar IV parts. The E and A Strings were absolutely necessary.
Now my mantra is four strings are enough. Although I'd love to create a 5-string baritone tuning of A D G B E, and have that low A String. You mentioned also about the size of the baritone uke and I agree. I had so many RSI problems with my full size CG. The guitar never felt secure no matter what I used to stabilize it while playing. I nearly destroyed my left elbow. What worked was using a guitar strap, but I was somewhat vilified for such a cardinal sin. ;-)