I think the name is a little undersized and I like the picture but it hasn't grabbed me yet. I'm not sure what it is. One thing is that with #34 I could have the logo embroidered on shirts, but with #37 it seems that I would have to use the name only with no pic.
This version shows the name enlarged. The picture is of a dripping bath tub fixture, showing that you do more than pipes (GC, renovation, etc.), using water in the image (essential with "Flow" in your name) but also showing the basic "of course we fix leaks".
This version shows how the logo would look when embroidered. It uses large blocks of solid color and there are no thin lines or intricate detail to get lost. If you end up selecting this design as a winner, I would of course provide both of these versions and any others that you would need (black and white, etc.)