I haven't seen that much of Seed, and I would admittedly probably like it once I got into it, but the animation and re-telling of the One Year War turned me off. I just really disliked the style. And even though G Gundam was really not an especially good show, I have some of the fondest memories of it (namely, the episodes like 23-25 and 46-50 or so) and really enjoyed some parts of the show. The original series is probably still my favorite, although Stardust Memory has some awesome battles and Char's Counterattack has awesome animation for the mobile suit battles.