The Necro is a beast. So much so that he's no longer that much fun to play. He can cakewalk through everything, and now that I've gotten his resists up to decent levels (especially lightning resist), even gloams are no trouble for him.
By far, the best tank build I've seen... he can just mow through things, possibly even better than a good barbarian build.
I started a new sorc to try to refine the previous attempt, since she was having too much trouble in Hell difficulty.
The new one is still building up, but I've decided to focus on maxing out the 3 main spells in each skill tree, rather than max out 2 plus masteries. Instead of maxing out the damage of Frozen Orb and Meteor by maxxing out Fire Mastery and Cold Mastery, I'm putting many of the points from the masteries into maxxing out Lightning Storm as well, so even when I run into Fire/Cold immune monsters, I'm still able to do decent amounts of damage.
So far, the stragety is working better than previously, although she's still pretty susceptible to gloam's lightning attacks. I'm trying to remedy that with charms and decent resist equipment, but otherwise, she's actually pretty strong.
I find the sorc is best for Magic Find, as she's got some really good equipment with pieces of the Tal Rasha's set, and a Blade Of Ali Baba with some socketed Ist runes. Her current MF is up in the 350-400 range, and just running her through Hell difficulty will usually net some decent unique and set items.
I'm always looking for some good characters to party with, so if you're interested in playing, let me know and we'll start a nightly quest run. Between the spare equipment I have, and having me along to rush a new character through the Normal and Nightmare quests, I can usually help to get a new character into Hell within an hour or two.
It'd be easy to create an Aliensoup game. Just let me know if there's any interest.