unholy dk 2s help please

hey guys, im currently at 1600 rating in 2s with my resto shaman, i have all 371 gear n gettin my weapon next tuesday. i know my character prrtty thoroughly, n have a razer naga so every spells keybound but i was wondering what the best partner for 2s is, i thinking another uh dk would be unstoppable burst, also i lovefrost but i feel like uh is better for 2s cuz ns spam, can frost be as good? also hows dw frost im interested in trying it, also any helpfulcriticisn on my talents specs or glyphs would be awesome, and any general advice on otations etc for either spec and what i could do to raise my rating higher, thanks! :)