Half Square Triangles

I am working on a half square triangle quilt. It will be my first quilt. I was inspired by this quilt from Red Pepper Quilts. I'm using solid gray with blue and green prints. I have about 300 made, and with the size I chose, I need closer to 700. Almost half way. I worked on a few layout ideas. Not sure which one to go with yet, though I have 2 favorites. What do you like?

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This is one of my favorite layouts. 

I also really like this one which is similar, but bigger:

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Here are the others:

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When I have more, I'm sure I'll lay them out again and get a better idea of each layout. Until then, let me know which one you like!!