It has been frigid cold up here in northern Michigan so I have not been running a lot but about to start training again. I like to run with music but I keep it a low volume to hear what is going on around me, I consider it background music. I am looking to make the jump into bluetooth headphones but have no idea where or what to look for. What bluetooth headphones have you guys had good luck with? Sound clarity isn't as important to me as comfort and staying in the ear is (iPhone headphones will NOT stay in my ear, always have to use over the ear headphones). Looking forward to what you guys have to say.