Hey guys-- I've been using the Klipsch S4 earbuds for a little while now - coupled with some large size Comply t-100 series foam tips. The sound is GREAT when they buds actually stay in the ear. I use them for working out and the buds just tend to keep slipping out. I lose all bass response pretty much when they aren't tight in the ear. Also, the Klipsch cords tangles SO EASILY - it's quite annoying. I've tried the earbud tips that came with the Klipsch and they are just "okay." They don't really create a tight enough seal to ensure bass response. Anyway, I'm looking for some great earbuds with good bass response that STAY in my ear when I workout and don't get jostled out. Thanks in advance.