Duffel bag vs. suitcase to Air force basic training?

don't take the duffel bag, the last thing you want is to take that with you. If you take that they're gonna think you are hot **** because you've already got a military duffel bag (they'll issue you one). Get a back pack, solid black with no writing on it, you'll need one for when you go to BMT anyways, and you really don't need that much civilian junk at basic. Pack light