I'm not impressed with the Masterpiece or the Yamato 1/60.
The Yamato has crappy paint, annoying stickers, too many parts to replace/remove during transformation, too many ugly gaps in the legs where the different pieces come together, and the legs always fall off in guardian mode. Plus the plastic just feels weak and crappy.
The Masterpiece...well, for that much money i'll get a new 1/55 with fast packs. But the rereleased Bandais don't fit together as well as they used to. I think it's a combo of weak springs, weak plastic, and that ungodly gap behind the air break.
So for me it's Joke Machines. Mwa ha ha!
Or the 1/48s if I get rich.
(Yeah, I know this is my 4th post and nobody knows who I am. So sue me. )