I'm currently using a 51/10 spec:
http://www.wowhead.com/?talent=sZVhtIx0drgqtV0x
I dropped the 2 points in improved judgement because it clashes with holy shield renewal (And a good tank will never prioritise judgement over holy shield in a standard rotation on any meaningful bosss - crushes are bad.). The spec includes all the mitigation talents and also has kings because I MT our ZA bear runs and I tend to be the only paladin in the group.
Honestly I can't say I miss the reduced judgement cooldown at all, it makes my rotation feel much more "complete" because everything comes off cooldown in a more graceful and predictable manner. Also on a dual-wielding boss like Illidan I get a lot of reckoning procs even with just 2 points in the talent, so it's pretty good value for money

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