What I generally do while leveling through planet progressions is take planet comms as my reward - always (unless I get a really nice orange gear option). When you do this, you can use those comms to upgrade your orange gear from the comm modifications vendor (located near the crafting area on each planet).
that's what i do. if you decide to collect commendations, it would prolly be a good idea to que for daily FPs. not only will you get comms for completing it, but you'll get a chance at nice gear drops.