I love 4.5! For me, what really stood out and made me love this new version was the fact that when I try and load 4th Generation clothes on Genesis, the morphs are not destroyed. Before, I had to go through hoops just to make sure the morphs stayed intact. Now, it's automatic! I LOVE IT! Now I can make 4th Generation clothes fit Genesis better whereas before I would have to cross my fingers and hope.

Confused by the new .DUF thing and why it's needed, but hey, I'm not a programmer. So long as my DS4.5 Pro works, I'm happy. And so far, I am.