My Main is a 70 Orc Shaman, chosen for the +5 Axe skill and the 30% stun resist (this is before 2.0 when enhancement Shammies were good in PVP - used to rule in 40-49 bracket with 2x flurry axe )

for my 3x Shammies, I chose Tauren primarily for the 3x warstomp