I think I enjoyed Wing so much because it was totally different from all the anime I was watching at the time (middle school). The characters were all so flawed and bizarre-- nothing like the main characters of other televised anime. It was really interesting to see the interactions of a group of kids who had essentially been turned into a bunch of unbalanced killing machines.
King_Jing, I understand what you mean about the lack of a strong antagonist, but I actually prefer it that way-- almost all of the characters do horrible things at some point, making it much less black and white. I still take issue with all of the pilots when I watch, and I enjoy that.
Of course, I always place characters over plot in importance; so, where the lack of a clear antagonist hurts the plot, I feel that it strengthens the characters, since each has to take on some negative traits to compensate. I prefer it this way, really.
3nodding
I've always liked fake military stuff, too, so Wing has held my interest longer than the other anime I used to watch, in the same way that I prefer, say, Final Fantasy Tactics to the mainstream FF games.
Unfortunately, I've never seen any other Gundam series, with the exception of one episode each of Destiny and 08th MS Team.
I would love to check out the stuff in the Universal Century if it's that good, to say nothing of the others. Are all these series available on the American market now, or does it require importing/buying bootlegs/BT and a benevolent seeder?