I, personally, will go either TR or NC. I really like the VS armor, personally I think that all of their armor beats all of everybody elses armor hands down. I don't really mind their colors (if you wonder why, it is becasue I am color blind, thought they where blue till I read this post). But what makes my go elswhere is the weapons. I don't want to be sending out little rays of purple stuff even if it kills the same. It is like in Halo, whenever possible I would avoid those alien weapons and stick with things that flings stuff though the air at high speeds
At the top of my list of proritys is long range, mabe if it turns out that VS energy weapons have longer ranges then their TR and NC counterparts then.....
EDIT: Mr_luc, you are a man after my own heart
/em gives Mr_luc a highfive