I personally find Scourge to be a more solid toy in both robot and vehicle modes compared to Hot Rod, but having said that, Hot Rod is a more ambitious figure in that it is cramming in Voyager-esque engineering into a Deluxe-sized figure. Scourge is also basically a shellformer, which is not a criticism of this toy per se, because the more G1-accurate you're gonna make a Scourge toy, then the more shellformery it's going to be (as the original G1 Scourge is just a big shellformer). The least shellformery CHUG Scourge would be the Generations toy.