Orcish Army Knife has a really good summary of gear for Frost and Unholy Death Knights, updated for patch 4.2. Just thought I’d share it in case there are some DKs who have not found it.
Why is it good? Well you can plan where you will get your upgrades from.
For example my only Wrist upgrade is either PvP, or a BoE drop, or one boss drop. So I purchased it now rather than waiting to get lucky. Sure, I needed to spend 12000gp on it, but it will be my wrist slot item until we are in the next content release, as I doubt I’ll get lucky with Lord Ry’s drop rate on wrist items.