Paladins I find to be the best if played properly. I wont go into very much detail.
Paladin with correct buffs could spam sacrifice and heal more hp than they lose, Buff on cool down reduction and get prayer and you should be able to play as a bishop/Tank
I prefer to Use Health in the beginning, once my hp has dropped below the bonus from the health i will switch to focus, then Phoenix icon, and angelic Icon + ToL should give me close to full hp again. When the Angelic icon runs out and Phoenix Icon i would switch to a mage weapon w/ acumen when necessary. to heal myself. You're cast