I love the chili pepper fabric. I've never done a OBW before so I don't know how it works. But, if you're doing small strips, I would go with the grapes. If you're going with larger strips, chili peppers. The reason being if the strips are too small you might lose the chili pepper-ness whereas the grapes are such a small print. The one with the birds is pretty but it always freaks me out to cut off animals heads when making a quilt top. And depending on how small the strips are, you might get a lot of decapitated birds :?