I finished putting together the XM-XX Ghost Gundam, and holy crap this was the best model building experience I've ever had. While the special shiny finish was perfect, the massive amount of undergates helped maintain the finish, except some of the arm pieces.
However, the true standout was just how well every piece fit together. These pieces slid together like they were made out of silk. It just felt so nice.
If you look at the inside forearm towards the hand in the "come at me bro" pose or the "a sword called compensation" pictures you can see some of the nub scars.