I have the Cafe shield on the Custom and while I love the looks, it does nothing to protect your head. It does makes long trips bearable and reduces chest pressure.
On our last big ride a bird flew directly in the path of the rider in front of me. The bird hit the Ultra Classic windshield and exploded. Had it been me, the bird would have hit my face shield. If you are getting a shield for protection, go big. If you want it for looks, the Cafe fits the bill.
2007 900 Custom