i have a sh she in my view is a damage dealer slower casting speed but that can be compinsated for the best at pve
i have a sps she is built for speed probably the best at pvp
i have a sor she is middle of the road but arent all humans not the best at anything but not the worst either probably the p v many with all the area effects
do not know about necro
My main is a Tyrant, but I have a lvl 68 sorc, i havent been playing her for awhile now, but sorcs arent that good anymore comparing to other mage classes. I dont know how that goes after 3rd class change, but i think SH after 3rd class change are better than sorcs. Either way, right now on my list it's all about necro.