As a SCH I prefer healing WARs. Their constant healing plus from defiance makes me shields bigger and when I crit a single shield can eat almost all of a death sentence. On WHM I prefer PLDs because of their more constant damage mitigation I can let Regen do most of my healing for me.

Tanking wise, I am still not 50 PLD but I think I prefer being a WAR. Other than loving having a giant axe I simply can't stand that PLD "really" only has one rotation, and hearing RoH over and over and over gets really annoying, the BB rotation for WAR has less harsh sounds and isn't nearly as bad to listen to plus being able to throw in a SE or SP rotation changes things up a bit.