Iv used ear buds in the past worked ok. My problem is that they fell out of my ear while putting on my helmet.
I've done 400 miles+ in a day ranging from twisties to triple digit highway blasts and cruising down Main St, sunshine and torrential down pour with my Sena. I've used just about every different style of earbud out there and while the sound quality of a good set of sound cancelling earbuds is unmatched the quality, ease of use, and overall package with the Sena system is better x100 then riding with earbuds.Thing with the bluetooth helmets or helmet speaker kits is that they're designed for touring, meaning voice communication and lower speeds. I tried several of the speaker kits and found them all to be junk, the audio quality was horrible and much above 55mph they're not loud enough.
I have a pair of Kicker earbuds with different tips so you can get them to slide in your ear and stay put. Only earbuds that don't instantly fall out when you put your lid on. They do a decent job muffling wind noise and are loud enough to hear at 80mph. Turning your head at speed or accidentally tugging on the wires tends to slowly dislodge them. I think they were like $50 or so.
This seems interestingThe best thing I have ever used.