Unholy DW: which weapon?

[ale2H]

A couple of days ago I picked up two one-hand weapon drops from Anub 10 and decided to try out Unholy DW for the hell of it. I'm still figuring things out and one of the questions that came up was which weapon to put in my MH and offhand.
The first one is http://www.wowhead.com/?item=47808
The Lion's Maw
One-Hand Axe
325 - 605 Damage Speed 2.60
(178.8 damage per second)
+52 Agility
+39 Stamina
Durability 105 / 105
Requires Level 80
Item Level 232
Equip: Improves critical strike rating by 38 (0.83% @ L80).
Equip: Improves haste rating by 29 (0.88% @ L80).
Equip: Increases attack power by 78.

And the second one is the Westfall Saber
187 - 349 Damage Speed 1.50
(178.7 damage per second)
+52 Agility
+45 Stamina
Durability 105 / 105
Requires Level 80
Item Level 232
Equip: Improves critical strike rating by 29 (0.63% @ L80).
Equip: Increases attack power by 74.
Equip: Increases your armor penetration rating by 38 (3.09% @ L80).


In addition, I put Rune of the Fallen Crusader on both of them, however, I've seen people put Rune of Razorice on the offhand. Is there an advantage/disadvantage to this?
Thanks in advance.

[Praxis]

Don't need Razorice for Unholy. Razorice OH is usually reserved for Frost. While it would increase your FF damage, the increased uptime from having FC on both hands will outweigh the small dps increase Razorice gives to Unholy.
As for which weapon to use in which hand, for Unholy DW, the general consensus is that you want a slow MH, with the highest-dps OH you have regardless of speed.

[Zerioc]

Don't need Razorice for Unholy. Razorice OH is usually reserved for Frost. While it would increase your FF damage, the increased uptime from having FC on both hands will outweigh the small dps increase Razorice gives to Unholy.
As for which weapon to use in which hand, for Unholy DW, the general consensus is that you want a slow MH, with the highest-dps OH you have regardless of speed.

What he said. Unless you've got another weapon with higher DPS than the Sabre go with Axe MH, Sabre OH.