I'm struggling through Headmasters at the moment. I love the characters but I dunno, it just feels like a chore. In saying that though I do look forward to watching Masterforce and Victory.

My current rankings would go

Season 2
Season 3
Season 4
Season 1 and Headmasters tied

I think if I were to be honest, the only episode of Season 1 I think is awesome would be Heavy Metal War. Season 3 I would have to say is more appreciated now as an adult rather than as a child.