Seems like the soft bottles/bladders are largely preferred, with many still carrying a hard bottle of some sort for drinks or convenience etc.
Filters definitely seem to be more commonplace than tablets or drops of any kind.
I think
@eamyrick has definitely given me the confidence to just go ahead and try tabs only on my next trip. It will be October so not having to worry about freezing a filter is a plus and the water where I’ll go is mostly nice clear streams, so not much sediment to worry about filtering out anyway.