Great review. I have a possible reason for the Obi and Vader having the smoothest blade diffusion. I noticed this the other day. My sabers hang on my wall. I noticed that the Vader and the Obi have a red tint to the blade when off. Compared to my Luke's (ROTJ and ESB) the blades have a very white tint while off. Has anyone else noticed this? Could this be why these look better, because of the diffuser material? The only other thing I can say is, Aayla, wow! ;)