The more 'classic' earbuds I have from my iPhone 4s work great. The newer ones that you're all familiar with don't seem to work all that well for me as one of them seems to fall out all of the time. Do you guys have that issue? Are there any tricks to have it stay in? When I was running in the colder weather I would wear a knit cap and ensure it covered my ears so the buds did not fall out. How about you guys?