It's that time of year.... my brother's birthday and I know he's been wanting a 3D printer really bad now for the past year or so. I have limited down what we are going to get him to a MakerBot Replicator 5th generation, a Solidoodle 4 and a Flashforge Dreamer. I'd love to hear your opinions on which one I should go for and why. I've heard positives and negatives about both. Has anyone here used all 3?