pvp server all the way, noone is going to be able to take you down with 25 toons, i remember back when i was on aegwynn, prepared was running around with 40 shammys at around level 40, a mage came up and did one arcane explosion and died from all the lightning shield hits back on him. was funny as hell. but ya, pvp server all the way.
As far as the signature go to www.wow-ratings.com and set it up there, i use the maxi toon list. it's pretty painless to setup and lots of goodies on that site too if you want to waste some time at work.