I've made 3 profiles for you guys to comment.
(tank set with 4 PC T10.5)
http://www.wowhead.com/?profile=20983819
HP: 47179
AC: 65.05%
def: 549 (5.96% miss)
dodge: 33.54%
parry: 27.00%
total avoidance: 66.5%
(tank set with maxed unbuffed armor)
http://www.wowhead.com/?profile=20983818
HP: 47209
AC: 66.00%
def: 551 (6.04% miss)
dodge: 31.66%
parry: 26.92%
total avoidance: 64.62%
(tank set with greatest HP)
http://www.wowhead.com/?profile=20983815
HP: 47719
AC: 65.05%
def: 573 (6.92% miss)
dodge: 32.93%
parry: 26.23%
total avoidance: 66.08%
I'm probably choosing the 3rd setup. For the following reasons:
- highest HP
- armor is decent (nearly identical to the 1st setup)
- 2nd highest avoidance
- highest def (means more HP gained from ardent defender talent)