I posed this question last year and a good majority of responses were to get the BRP BVs2 modular helmet. I did, and it has not disappointed. It has a mouthpiece that directs your breath out of the helmet instead of up into your glasses. Upside is no more glasses fogging. Only downside is the absorbent inserts you need to soak up the water your breath produces--I've made my own out of synthetic chamois so I can just wring them out and reuse. You'll understand if you get the helmet. Good luck--fogging glasses used to ruin my fun, but not anymore!