Rosco 7750, Arcadia, great
gobo for breakups. I HATE flowery breakups, Arcadia fits the bill. Also, you can never go wrong with construction B-D. Just be sure to get at least 15 of at least 2 patterns so you can fill out an entire system with them. And... all A sized! (if you have a full S4 inventory, which I believe you do).
http://www.rosco.com/us/gobocatalog/...ges/77750.html