Well, to add a new voice to this thread, I must say that my favorite Gundam series is none other than the first one (as B Gundam states as the 1st series in the Gundam chronological order) Mobile Suit Gundam aka 0079. I have always loved the solid plotline and this is the only Gundam series that actually makes complete sense to me from start to finish (Wing has a lot of the same elements but it still lacks what 0079 has). As for being the original story, there are no expectations to know about the previous wars and since the story opens up with the start of the war, there are no missing elements. Thus making it the perfect (and rather long) war story. It has massive appeal to perhaps only old-school mecha/war anime lovers. I understand that the other series have a beginning and end to them but they all seem to copy (and turned cliche) the same-old stuff that 0079 captured perfectly. The best part of 0079 is that the story focuses on the war and the development of the characters. That is why MS Gundam is my favorite of all the Gundam series.