Originally Posted by
Exemplar
Hurricane vs. Avalanche
I received some definitive data on what can proc Hurricane (thank you, kilroggphara). Modeling it as a PPM mechanic where the melee and spell versions can proc separately (and simultaneously) I get the equivalent of a bit more than 55% effective uptime on a single buff (slightly above Redcape's current model of 50%). This is higher than the 44% actually provided by the single 9 minute run kilroggphara provided.
So, quite probably overvaluing it to about a 55% up time we wind up with an average of about 250 haste for Hurricane.
Avalanche is around 260 DPS in my spreadsheet, but only about 230 DPS to Redcape. I'll use his lower value.
So with Hurricane at 250 Haste (or less) and Avalanche at 230 DPS (or more) you would need each point of haste to be worth .92 DPS for them to break even. Also using Redcape to give haste the most valuation, in his estimated average raiding gear a single point of haste is worth about .38 DPS. This leaves Hurricane at 95 DPS to Avalanche's 230 DPS.
The OP is updated with this DPS comparison evaluation.
Result: Hurricane is worth about 1/2 the DPS of Avalanche. Until crystals become readily available and Landslide becomes more reasonable for the price, Avalanche is the go-to interim enchant.