I like them all and agree that they would all work for OBWs. My personal faves are the purple roses - I think you'd get a really beautiful quilt out of that with the light and dark purples and the green for extra interest. Also the parrot one, I think would be really striking and I love the way that with fabrics featuring animals or birds, you get little glimpses of beaks, eyes etc here and there. So, how many have you made already? LOL