Ret Libram for 5xPaladin group?

I was almost going to dump this in the new boxers section so if an Admin feels it should be there feel free to move it.

I'm wondering over Libram choice for my 4xRet Paladins. For the Prot I was going to go with Libram of Defiance (chance to boost dodge by 200 for 18 secs on Hammer of the Righteous), to boost his dodge rating at the start of fights, but for the Ret's there seems to less good bagde options.

Libram of Valiance (gain 200 strength for 16secs on a SoV tick) would essentially require them to be using Seal of Vengeance, whereas they currently use Seal of Command. SoV would seem to be more useful only on bosses, but the bulk of combat in a dungeon is trash not boss. Since it also procs of white strikes only, it'd take a while to build up the full effect too, making it rather pointless to use on trash.

The next choice would be Libram of Discord (boost Divine Storm damage by 285). This would allow the Rets to keep using SoC.

Of course, going really tricky, I could get both and work in a macro to switch the seal in use, along with the libram, depending on whether I'm hitting trash or a boss, but I wonder if that's just over-complicating things a bit.

So, those with 1xProt,4xRet combos - which librams are you using? Currently my guys all have the Venture Co one.

I use discord, which is also improved by the reset from the set bonus. Switching gear for a boss isn't uncommon if you need some additional capabilities, but unless you can't usually beat the boss it's probably not worth the trouble ;)

I run Libram of Valiance on mine. Stacking strength was a much better option as it affects all damage and benefits from Kings and other buffs. And with seal of light for situations where I actually need healing, I prefer the extra DPS. Just picked up Darkmoon Card: Greatness on the rets last night, so I'm dying to see how their DPS is stacking up now.

[edit] SoVengeance/Corruption is for bosses or hard trash singles. SoCommand is for AoE trash. I've used both in either situation at times to help with specific problem areas but generally, that's the rule.