At first glace, to the average druid who HASN'T been reading along, (jk) Dancing Steel looks to be the better choice.
Ave Stat Weight 0.0243 (Crit+Haste+Mastery)/3
Enchant Weight 14.56
Dancing Steel (1PPM)
Agi 1650 %Uptime >14.56
This works out that Dancing Steel needs to have a 30.23% up time.
Time to start watching logs, I will update you guys as I see more actual uptimes from mine and other bear logs.
Note: Basic math:
Enchant Weight = stat weight * amount * % Uptime