Wondering what to spend your warzone commendations on between levels 20 and 40? A quick survey of the PVP items vendor on the fleet doesn’t give much outside of a few stims and lock boxes.
I found that you should spend your commendations on gear, if not for you, then for your companions. Don’t be afraid to take a chance on a couple of lock boxes too, but you will get the most bang for your buck by buying gear, until you qualify for the next PVP set.
http://torsyndicate.com/