I have a collection of art pieces from my favorite local photographer and friend. I have finally gotten them all matted and framed and have moved into a home with a long wall that I feel would be appropriate for a gallery wall display. Which of these two layouts makes the most of the collection?

-Disclaimer 1: I took all these photos this evening, so the pieces themselves are much brighter and the wall is a pale grey.

-Disclaimer 2: I would have loved to have matted them a little wider for a bigger impact, but price was an issue when talking my SO into getting mats and frames. Marriage is about compromise(?)

-Disclaimer 3: I don't know what I was thinking with the small square photo mat. I think it either needs to "ground" the display by being in the middle or not be in the grouping at all. I can always find it a home in another part of the house.