Minato and Itachi for me is quite debatable. It can go either way.
I tend to agree that Obito > Itachi if Itachi never know how Kamui works.
He probably did. Obito had no problem using it around the other members and that would explain why Itachi set that amaterasu activation for him...Obito would not already be phased out due to not suspecting it. Obito has only gotten injured most often times when he wasn't expecting an attack. Itachi didn't know that Obito could use Izanagi, which is what he used to put out the amaterasu.
Also in the RTN movie (not quite canon, but then again it could be considered as canon because Kishi wrote the entire script for it), Itachi sees Obito using kamui and then tells him that there is still a way to hurt him. Then Obito calls him a "troublesome shinobi" and leaves.
ot: It could go either way and they are both very knowledgeable shinobi. If this is alive Minato, I would lean more towards Itachi taking it though. BM Minato and it could go either way.