I've got an sj4000, cheapo gopro copy, i use it as a dashcam in my car, needs resetting every so often though, and battery is now dead, only runs when ignition on, supposed to run on for 3 mins after i switch off. Also got an Ion Air pro, but i don't really like the bullet cams any more either, and i guess i've answered my question on the session, as i don't like no screen.