I must have tried a dozen different kinds. They either keep falling out in rougher terrain, get plucked out when slipping my helmet on, battery dies in just a couple hours, get plugged up with wax (ew), or are way too quiet. So I bought this: https://www.amazon.com/Jumbl-Bluetooth-Hands-Free-Streaming-Receiver/dp/B00UUDZSKE I'm going to check around the house to see if I have an old set of wired headphones that I can sacrifice the speakers out of and mount them in my helmet. I don't think I do though. And if I don't, any suggestions for a set of helmet speakers for ~$40? I can stretch that to ~$60 if I have to. Something loud enough to drown out wind noise, and bonus points if there can be some bass; anytime The Crystal Method kicks on I get myself amped up.