Tech: I like the 2nd photo the best with the smooth splash up and just about perfectly symmetrical.
Sportswidow: I like the 1st. The rocks add perspective.
I have a couple to put up here of a small waterfall just down the road from where I live. The first I think looks better in monochrome and the second in color
Shot at 100mm, 1/13 second at f32
Shot at 115mm, 1/10 sec at f32