I've been struggling with a sweat problem like the OP, only I have hair and a really big melon (apparently). As such, the "one size fits all" headbands like the Halo's fit way too tight on my head, so be warned if you have an extra large brain. I also find that even a thin sweat band that ties in the back is enough to make my helmet fit uncomfortably weird, so I'm subscribing to this post to see what everyone else is doing.
