I particularly like the second one. My only slight gripe is that both of them look to me as if they could do with a couple of degrees of anti-clockwise rotation: they seem to slope downwards to the right.
I agree with your comments.
The first image doesn't do anything for me, I don't see anything of interest - sorry!
The second image has potential, but in the current rendition, it looks a bit too "flat" in tonality. I suggest trying to pump up the midtone contrast a bit, and perhaps fiddle with the reds and oranges in the channel mix.