I agree.... Gray!
Welcome to the Quilting Board!

One more for gray! I like your selection of fabrics.
Gray it is! I reallly like it with the yellow.
Families are like quilts, lives pieced together, stitched with smiles and tears, colored with memory and bound by love.
I also say gray.
Here goes 1 more vote for the gray. Want to see your quilt top when done.
I know that right now gray is popular BUT but I think the white makes all of the other fabrics POP. I vote for the white!
When it seems like the world is falling to pieces remember that the pieces are falling into place. We are nearing closer to the End Times.
Here's another one for the gray! Selection of fabric is really nice!
I too like your fabric and understand that the question is gray or white so I would probably pick gray. BUT have you considered putting black with it???
Since the quilt is intended for a grey sofa, I prefer the white for the background. Using the grey might muddle with the sofa. Will you have an opportunity to check out the tone of the grey sofa?