I've read a lot of the PM threads but wanted a little more detail on choosing energy enhancement lines for a PM.
I'm currently getting ready to TR my PM and have relied almost solely on fire and cold as far as enhancements go. Fire obviously gets somewhat less powerful at the high levels but for leveling it's a no-brainer.
Cold has been cool (no pun intended) and has a nice array of AOE and single-target spells but I don't feel like it's a must-have.
The biggest problem with cold and fire is that a lot of things are immune to both, or at least heavily resistance. I also regret not putting APs into the force line, even for Disintegrate alone. Having that for bosses, golems, etc is really handy.
I've dabble with some lightning spells, mostly because I needed something to get through resistances in a pinch (like quests with a lot of Blackbones). Seems like it would be a god option for dealing with trash since their are a lot of AOEs (chain lightning, ball lightning, etc).
Acid I have virtually no experience with. It seems like a good option for getting through resistances and having some DOTs is nice.
So in my next life, I'm definitely taking both fire and force to at least 7/1/1. I also want to take a third element but not sure which yet. I'm currently leaning towards lightning. Any thoughts?