I agree, they both had their good points.....Mego had the better articulation, but Kenner had such an expansive line and, like you said, the movie to back it up. The Micro Aliens are some of the best figures ever designed and my personal favorite 3 3/4 figures ever. But I think that it was Hasbro that built on what Mego started with articulation and then blew it out of the water with the G.I Joe line. Those really are some of the best designed 3 3/4 figures. They took what Mego and Kenner had going for them and created one of the best toylines of all time.
You will always be your child's favorite toy. ~Vicki Lansky