shield charge deals low dmg but has the longer stun,can go up to 4 sec,and from my pvp experience ive learned that the dmg that you can deal during those 4 seconds its vastly superior to the difference in dmg between crit charge and shield charge,and thats the reason why invasion has become so popular on the pts.....so i suggest to do 1h-shield or use focused charge if you are a templar,but its has a shorter stun and they increased the cost recently....crit charge its only worth it if you want to spam it with crit surge,but even so i consider the cc better than a minor heal