#1, #2, #5 are framed too tightly for my taste, but I like #2 anyways.
#1 is probably interesting in context, but out of context it's not, to me.
#2, #3, and #4 all have real virtue, there's a hint of personality and/or storytelling in all of them. For some reason I love #3.
These are all, as mentioned, somewhat lower in contrast than is traditional with b&w. I'm not sure that a traditional "full range of tonal values" treatment would serve all of these particularly well, but it's worth trying out. The modern "full range of tonal values, and then destroy the ones in the middle" look serves almost nothing well, and would certainly ruin these. Well, maybe the first one could handle it, it's graphical enough with the bow and so on. Maybe.