Reckoning, is very situational. Really good for AoE situations where multiple mobs are hitting on you, causing a high chance to proc the buff. For single tanking bosses, it's slightly marginal.
I currently run with 4/5 Reckoning, mostly because we bring 4-6 Paladins per 25 man raid (we still only have 2 mages and 1 lock at 80... full of fail), so kings is pretty well taken care of. I disliked DG in beta, and at this point still prefer to have the ability to hit Bubble Shield when I like, so I dont use it. Not to mention, I'm always tanking.
That being said, here's some stats from last week's raids.
Straight "tank and spank" from my point of view fights.
Loatheb (I had the buff twice I believe, getting the buff isn't the end of the world btw, you generate 0 threat, but by the time you prob end up getting it, you're about 600-700k threat ahead.)
6:56 Fight Length
0:31 Uptime
7.6% Uptime Percentage
Gained 6 times
Heigan
5:59 Fight Length
0:33 Uptime
9.20% Uptime Percentage
Gained 5 times
Grobbulus
6:19 Fight Length
0:54 Uptime
14.20% Uptime Percentage
Gained 8 times
Patchwerk
5:36 Fight Length
1:12 Uptime
21.50% Uptime Percentage
Gained 12 times.
So basically, the faster the boss hits you, the better it is. Just remember that it is "marginal" extra attacks. My average hit on PW was 667, with SoV doing 10. That's an additional 32,016 damage from white hits, and another 480 from SoV. This is also dependant on it not critting.
Your milage may vary.
_________________
