i fly the CRJ. or really what I do is sit reserve and don't fly the CRJ. i use the 22"aurora bag. everyone else has the stealth series. heard the metal frame bag bends and the plastic is lighter and doesnt get bent out of shape. couldnt handle spending that much on luggage though. so far the aurora is working fine.
i use the luggage works electronic / cooler combo cube, that thing is legit.