We just upgraded with T-mobile about 5 months ago.
I have the Galaxy Note II.
Wife and daughter have Galaxy SIII.
I absolutely love it and I'm pretty sure the girls wished they had gotten the Note also.
Even if they won't admit it. My daughter was begging for the Iphone because that's what all her friends have, but after a few weeks she said she is glad I talked her into the Samsung.
Of course what do I know, I was still using my old V3 Razr when we upgraded.