i agree with you on 3x4. I think it's obvious that they're a canon pairing, as they should be :)
sometimes i enjoy 1x3, but i don't see any emotional connection beyond friendship, really, and i think a relationship between them would be for convenience alone. that's just me :)

i really can't see 1x4, i don't know why, or 2x4...i think i just feel too much that quatre looooves trowa ;D
really i'm a 1=2 all the way :DDD

and poor wufei is almost always left out :p

i don't watch any of those other shows, so i have no opinion 8D