Wow, IC2 is actually useful for something? Jk, jk, sorry people my intent was not to start a flame war. But this is some nice research. Definitely going to try out the Bedrock sword and the Bound Sword from Blood Magic. Just remember, right clicking with the Bound Sword destroys a swathe of land if my memory serves well so using it for everyday mob killing might be a bit too dangerous.Finally went and did some testing myself.. found that the bedrock sword is the best "out of the box" weapon by far.
It's unbreakable, +12 attack damage and comes with Sharp 5/Loot 5. Does 19 damage with no additions.
Going to have to get it legit, but it will be worth it. Bloodmagic sword also does +12 attack damage, but you need to enchant to +5 sharp yourself and can't get +5 looting. I also know nothing about Blood Magic, so there could be a downside I don't know about. I know charged light sabre does 2 damage more (21), but that has to be charged and has no looting.
Unless there is a TiCO weapon that will outdo that, I've found my answer. Thanks everyone.
Question: Does the Nano Saber one-shot mobs like Zombies?