Playing a melee warrior that sometimes used a bow, I found a mage head best for the creature (more effective, and less moving around, so a better blocker if you wish to stay behind him). Trying to take out a group of level 21 imps in the fjords at level 17, I did much better with a ranger head (level 2 Fireball) than warrior (level 6 Rush Attack / Fatality).
Duel Wielding would probably be more consistent than a 2 handed sword, though at low levels the off-hand penalty would mean you are not doing much damage, so not converting much to hit points. I'd say the results are close enough that there are more important factors in choosing which to use.
