It doesn't have to be the most expensive one in your collection, or the rarest one you own. Just one (or more) that just make you smile when you look at it/them. My most recent one would have to be my Ehobby Twincast. I just love it! I know that there is nothing really special about it. It's just a blue Blaster with a slightly bigger chest compartment. But it brings back memories of my childhood hearing "legends" about the mythical black Soundwave and blue Blaster that could hold two cassttes! But they only existed in Japan. I thought that I would never even get to see one, and now I own one. It's just too cool! Same with my God Ginrai. Hearing stories about an extra trailer for Powermaster Prime, but again, only in Japan. And now it's mine. Brave Maximus too. When I got him I spent an hour just staring at him. So how about you?