I like this one better. I like the narrow DOF, with the focus on the small bubbles. I'm not sure whether having more in focus would help or hurt it. As always, the lighting and color is spot on, of course.
Tough picture to comment on. I like how you positioned your focus diagonally across the frame. The combination of colors works well, but I think that the larger oil bubbles are a little big, as is more evident from the overhead shot.
I find this one very nice - I get kind of tired of the other kind though I've tried it and never been able to get any focus or clarity so I don't criticize LOL