The only input I have is what not to get. I have a Bell Delirium Pro. It has a "ridge" down the center of the center rib. That would make mounting a light on top the helmet harder to do. Mounting a small light lower and more forward on that helmet is not too bad as the "ridge" blends into the rib in front
Yep, finding a helmet that works well with helmet lights is a big issue. I've often found that the least expensive ones usually work the best. You might have to take your light into your LBS and do some first hand comparisons. I have an older Bell helmet that works great. Unfortunately I don't know what model it is and I doubt they make it anymore anyway. Most of the helmets I see nowadays have the vents lined up in such a way that they are completely useless when mounting a light ( not to mention mounting a torch ).
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