Chanter theorycrafting!

Crit, crit and more crit. I might mix this with a little parry to help me trigger my parry-conditional skills. Splash swing FTW!
-> I don't like attack stones. 5 more damage per attack? That isn't multiplied by rage spell, invincibility mantra, etc? Yeah, no thanks. I'd rather stack crit until I knock-down and stun every other attack, especially since staffs have decently fast attack speed.

This is for when you have no cleric    and you are spending every second spamming recovery spell and healing light ... choices are basically block, parry or MR. What's that, I hear you say? Parry? No hp? HERESY!  
Hear me out. Basically, I think it's better to not take damage at all rather than take it and be still standing. A parry decreases damage taken by 45%, plus you can use it to return a stun+kd, increase your defense, etc. If I socket HP I take more damage, I need more pots/castings of healing light to get back to full HP, this is time spent not healing the tank. Since Chanters' heals are limited, and often slow to cast, I prefer to avoid healing myself if possible.

Block/parry: I prefer parry. Simply because 45% damage reduction is good enough, we have skills to boost our parry by 300, staffs offer high natural parry + often bonuses to parry. Also I'm too cheap to buy, socket, enchant a shield.   I mean, if I go block, I probably have to put block stones on my armor to get enough block, which means either a) those stones are useless when I switch to a staff for dps, or b) I have 2 sets of armor. Is mace+shield+Block really so good to justify all this??

MR is obvious: If I'm slept, treed, transformed, I can't heal. Also biggest DPS seems to come from magical bosses, more than once I've been the only party member on 100% hp after a nasty AoE   . Depends on the instance of course,, but I prefer MR generally, I hate being unable to act.

I run this build: Crit/Parry or Crit/MR, according to whether I want to piss off melee or magical people. No HP and no attack for the reasons above, no block because I don't have a shield, no Crit/Parry/MR because you need to focus your resources somewhere!
If I found out that Acc or M.Acc helps land stuns I might mix in a little of that, but so far all I know is that M.Acc is good for godstone procs. Anyone know better?