Human Monk vs Dwarven Defender

This has been a toss up for me for this game. While the DD does have amazing saves vs pretty much everything and his Defensive Stance does give him increase tankyness, the Monk almost comes close to him. Later in game he gains the immunitys to almost all CC and can heal himself, (though he does lack the armor the DD has) is none the less good.

So I guess my question is, which one tops the other. If I wanted to do a no-reload game of BG:EE2 which one would be the better option?