Manhunter. Mostly because yes Superman's physical strength goes far beyond MM's, but I would find the telepathy extremely useful. Besides, in the real world with no supervillains to fight Manhunter's strength would be plenty.
I don't think that the ring flying off of Hal's hand and "Lantern 2814 deceased" means that HAL will die. It could possibly just mean that SINESTRO will die. Sinestro IS currently Hal's replacement so Lantern 2814 would refer to Sinestro, not Hal. And Hal's ring is just a copy of Sinestro's so maybe when Sinestro's ring leaves for a replacement it takes the copy with it...
@Malonius: yeah the phoenix force would definitely bother him. It's not the physical fire that hurts J'onn he's resistant to that now. its psychically created fire and it's more a psychological weakness than physical so the gem wouldn't really protect him from it. he wouldn't be able to handle something that manifests itself as fire and wouldn't want to most likely.
@Malonius: its cool. ha i was hoping someone would bring up the gem that's actually the big reason i didn't include it. But I don't think J'onn can weild the Phoenix Force. Psychic fire constitutes his biggest fear and weakness.
@Malonius: i'm aware of the difference in power scale if they were on opposite ends sure i'd see the problem but theyre all being used by the same guy so doesn't really matter. Do you have a suggestion for who could beat him with these items?