That's a tough one. I like the white sashing, but it kinda makes the 9-patches look like they're just sort of floating. Of course that may be just the look you want. Does anyone ever use ecru and white together in quilting? I know that used to be a popular combination in heirloom sewing. I am just wondering how it would look to use ecru for sashing for a little bit of contrast without taking away from the beauty of the blocks? Just a thought ... all of your choices are good.