Nutcase now offers Ear Pads for the Street helmets, if you are into getting a new helmet. My girlfriend uses them with her helmet, And likes them a lot. That only works if you want to get a new helmet to. Nutcase has lots of cool designs for their helmets.

I use a Buff my self right now. I have very little space for extra, Big head, only to "clicks" extra room with my Giro helmet. But I would like to get a SmartWool Headband. I have tried it on and it seems to work well with a helmet.