I go with Minato for one very simple reason... Out of the whole group of Hokages he is the only one with above average sealing techniques... Why would he need that? Remember that Edo Tensei was created by Tobirama... and the only way to stop the edo bodies is to seal them (being at peace can not happen here because unlike Kabuto he would only summon 2-3 bodies and have full control over them.)
He has the ability to outlast every other Kage, he might not have power to defeat all of them, but he still has the best jutsu for defense, you can't touch FTG, and besides him, the other Kages were never known for their speed.