Kind of at a loss here.

I've got fairly decent gear and I survive during 25man encounters in ICC I haven't heard anyone giving me the You SUXOR LAWL so I'm at a loss of what piece to upgrade next. The skeleton key looks tempting but I'd lose dodge. If I followed my normal" Upgrade the piece I've had the longest" it would be the ring but there is no rings on the vendor so the next longest piece would be the Trinket . I just want to be carful with the Frost badges