ill chuck in my 2 cents.
elf all the way
evade - one of the best skillz period, i would love to see the look on peoples faces when i evade 2 awp hs from em.
trushot - 1 shot scout kills, need i say more. turns the scout into an awp but better. faster bolt action, lighter weight, more rounds, cheaper, makes for a hell of alot of fun.
thorns - weakest of the elfs skills, but hu can say no to 15% damage returned to ur shooter.
entangle - possible one of the most annoying skills in the game for enemys. leaves them totally vulerable, and if they dont have cover, theres a good chace they are gonna get fucked up. this + scout =ownage
i always buy necklace of immune, whicever race i go, it saves u from certain death in so many situations, sure mask would be nice, but the choise between being pwned by an orc nade before i even see the enemy and not. i prefer not.
i really only use my elf and orc these days. i just cant play the undead anymore, to used to dodgin bullets and doin xtra dam. orc though, they would come in second for me.
Critstrike - makes ur nades have a chance to still kill if the enemy has immune, and when u finger is on the trigger with 600 rounds per minute + the chances of critical stirke are fairly high. of course u cant rely totally on it, but it is still handy.
Super Pwning nades - hu can say no to 6x the damage of a normal nade? the person on the receiving end.
equip recarn - this is the orcs weakest skill, but is very handy. has no offensive power but means u can save ur money easily, even spawn in the first round of a map with the last weapon u had, u know how funny it is having a m4 on the first round?
chain lighting - in my eyes this makes up for un-offensiveness of recarn. mad in the first round, no one has immunes, its time for fun. having 50 health instanly removed lowers one life span considerably. also good for scoping out those pesky human campers, lighting one gun, and it bounces off onto another guy hu u cant see. u see it jump twice and u know to call backup. or go rambo style.
elf and orc are the best classes cause they got active ultimates, as opposed to humans teleport and undead self destruct. since i have a script that uses the "ultimate" command on the press and release of w, a, s, d, shift, ctrl, space, mouse1 and mouse2. i virtually have my ultimate beeping at all times, a piss of if i wanna camp, but a godsend when rushing. dont need to think about pressing the ultimate button leaves more time for ownage.
3rd would be undead
cant be fucked doin a write up on skillz for these 2 cause its 12:00 midnight and i got school tomorro.
4th human