*sigh* Why does everyone just blindly quote EJ for everything and assume it is the ultimate word? I don't know if you guys bothered to even look at anything else on that page, I'd guess not, because if you had you would have noticed that it is WAAAYYY out of date.
The paragraph just above what you guys quoted says "In general terms, Hit and Crit gems will have the highest return for investment. Shaman that are geared in Sunwell items will probably find that Agility or just AP gems are superior.
Simulation is required to find the best fit for your gear."
The section just above that suggests that
http://www.wowhead.com/?item=42607 is the best option for our totem slot.
I dunno about you guys but I'm not still in BC nor am I still in Sunwell gear, and no way in hell am I still gemming hit and crit or using the glad totem over QE. The relevant information from this page is the bolded portion. The lesson today is have some common sense and think a little for yourselves. The Enh Shaman F.A.Q is regularly updated and is a more relevant resource for information.
To the OP: My suggestion would be to sim it. I just use Rawr and check my DPS with each meta gem in the slot and use whichever is superior. Generally I would say that Chaotic Skyflare is better but that may depend on your gear, I can't say for sure. Read the the Enhance Shaman F.A.Q gems section for a little more info.