I really like #2 as well. The colors are beautiful. Because of the background in picture 1, your Shepherd in the middle seems to get lost in the picture. That happens again in picture 4, the B/W conversion of #1. Everyone is clear in #2 plus, I like that it's at dog's eye view instead of people's.
A color print for sure. I have a canvas print from a photo (a beach/sunset scene) and the colors are wonderfully bold but the fine details have a very slight blur to them. Which is typical and what you would expect for the medium. I think the B&W photos would lose too much definition on canvas.