Wing was my first Gundam, followed by G Gundam, then X. SEED and SEED Destiny are my latest additions. I still have to watch Turn A...T_T and all the old series...T_T too bad we don't have cable here anymore...
Anyway, my favorite would have to be Gundam Wing. My innocent preteen years would have to be forgiven if I thought the Wing Boys were cool back then, because they have robots and they all look gorgeous (spank the foaming-at-the-mouth fangirl inside me!).
And because it was these bishies that introduced me to Gundam in the first place.And made me realize things about pacifism at such a young age. XD
I never realized people took my poor Duo so shallowly...;_;
But what really drew me to robots in particular didn't have anything to do with Gundam, though. It was
Evangelion that drew me in. :X Gundam X would be the next in line.
Least favorites? Hmm, G Gundam was OK but the end really ruined it all for me. SEED was good pre-Freedom. Destiny just made it worse.