the amount of times i have had the planet pods open up when i brush my hand past them or when knocking it slightly!
man!
i use the fat boy, evil, planet and sp pods
(team stash so its a mix and match)
i prefer to use a sp pot or a fat boy as then i know i have to try and open it.
admittedly they are a bit tough to open them sometimes but ive found that is mainly when its cold.