My پسندیدہ "traditional" mech series is Gundam Wing. I actually like Escaflowne more, but that's مزید of a fantasy عملی حکمت than a sci fi one. I usually stay away from mech anime, and cute girl pilots is often not enough to keep me from getting bored, but I do like Lagrange: The پھول of Rin-ne.
This is definitely a tough one for me. I've seen tons of mecha anime, and I've enjoyed all of them greatly (with one exception that I won't bother mentioning).
I'm going with Gun X Sword. Then again, Gun X Sword is pretty much my پسندیدہ عملی حکمت of all time, so it's automatically my number one پسندیدہ mech series (though there are some shows like Voltron, Linebarrels of Iron, and Robotech that manage to come close).