I've been hearing a lot of negativity surrounding the 5th generation MakerBot Replicators. My little brother now wants a MakerBot, and I don't know if I should suggest him getting a Replicator 2, 2X or one of the 5th gen ones. Has anyone used all three, an could give some good feedback as to which would be best to purchase? I'm tempted to have him get the 2 because the price is so good, but the 2X is pretty bad ass, but the 5th gen are the new ones with the new technology (smart extruder, etc). It's hard for me to help him decide.