Thinking about a red and gray log cabin quilt

I'm at the early stages of planning a quilt that will be a wedding gift for one of my son's best friends.  He and his fiancée really like scarlet and gray, so I'll work with those colors.  I'll have a good deal of hand-dyed gray fabric left over when I'm done with my current quilt in progress, so it will be nice to use that in another quilt.  I'm thinking of a log cabin quilt.  Here are some early trials for blocks.  The first group of three below is made of "logs" that finish at 1.5", with the block 3 logs deep on each side out from the center.  The grays are my hand-dyed fabrics; the reds are commercial prints.  Here I'm comparing three different fabrics for the center square.

light gray center

white center

black center

Then I did another block using all hand-dyes, a light gray center, logs increased in size to 2", and only two logs deep out from the center.  (These are reds I had on hand; if I go with solids, I will dye reds with less orange in them.)

I'm leaning towards a block that is just two logs deep, but I'm not sure on the width of the log or on solids versus prints in the red.  In the comparison below, I've folded under the last log in commercial print block, so both are just two logs out from the center.

Now I'll ask the couple what they prefer. . .  They decided on all hand-dyes (like the block at the left in the last photo).  How nice to have someone else make the decision!