Whats a good skill for weapons other than guns for Fallout: New Vegas?

I'm trying to choose a skill other than guns that will be good for fighting. My friend told me I shouldn't do both guns and energy weapons at the same time and im not really interested in unarmed. So that pretty much leaves explosives and melee left. Explosives are a lot of fun but seem expensive and a little scarce. Melee is fun to but im not sure if there is a large variety and it seems unrealistic that you could blow people's heads off with a baseball bat, but they last a long time, and like explosives they don't get used up once and there done. So what do you think is better and how should I raise it? oh, and is it bad to do both energy weapons and guns at the same time?

Unarmed is generally a useful skill.

Guns + Energy isn't bad to do at the same time but I find it better to choose one weapons skill to level a long with two other utility skills so you can have a easier time in other things in the game instead of just combat.

Unarmmed or Melee since they do not need ammo to use those weapons. I would say unarmmed would be the better with something like blade knuckles. I was on a trip and down to a few rounds left so I switch to my knuckles and I was able to get through that part.

Alright, so I'll probably do melee cus, like someone said it doesn't use ammo and is pretty good.

Energy or Melee, the plasma caster does insane damage, and the chainsaw does 100 DPS.

I handle things with mah words :)