A great skimmer, at an even better price. http://www.scaquariums.com/product_p/sca-303.htm
It's always better to go bigger for many reasons. If you decide to upgrade down the road, you wont need to upgrade the skimmer. Also, just cause a skimmer is rated at 150g, doesnt necessarily mean it is. Manufacturers seem to exaggerate on this imo. I would rather overskim, than under skim. I have always been told it's best to go double if possible.