I never liked Prowl that much until I started reading his IDW stuff. All of a sudden, I wanted a Masterpiece Prowl really bad. Then we got one! And really, going through the IDW books (I am just starting) it is uncanny how much the designs of the Masterpieces take from the IDW designs. Maybe that's just because they were both trying to accomplish the same thing - G1 designs, except living in the real world.