I'm at a bit of a disadvantage here, because I've actually never seen Terror of the Zygons — I've be

I'm at a bit of a disadvantage here, because I've actually never seen Terror of the Zygons — I've been waiting almost a decade now for the DVD! I must admit, I don't see all *that* much of a difference between the two Zygons, although I will grant that the original does look a little better.