The toy has to be meaningful to me, either because its one of my favorite characters or because it is well made/engineered. I'm past the days of completionism, especially since apartment life doesn't suit it well haha. Some examples: had no idea who Spinister was but was very impressed by the colors and the transformation, so ended up picking him up. Override was my favorite Cybertron toy as a kid so needed her update, plus she had a lvely transformation too. Victory Saber really impressed me. However I feel pretty satisfied on deluxe class figures in general, Elita-1 was the first I bough since Spinister I think.