I was under the impression that the Legendaries came out a couple thousand DPS above the Heroic No'Kaled and Legendary off hand. I just spoke with the top rogue on my server and she is saying that it was proven that Heroic No'kaled comes out on top for single target damage. I don't see how and have not been able to find any supporting documentation. I can see where in shorter duration fights that it may come out on top given that shadows of the destroyer take so long to stack for combat but I still do not believe it would be enough to come out on top.
Top guild on your server is Meridian, according to Guildox. Those are the two best equipped rogues in that guild. Forphium is Assination/Sub, and had legendaries equipped, while Sourskittles is currently speced combat and has heroic axe + legendary offhand.
The folks on Doomhammer - including Aldriana - with the legendaries all seem to be rocking sub or assassination these days, so I don't have much to go on that way.
Strictly speaking, most of the top items are BIS - that is, do the most damage - depending on the fight. I never use my compass on Spine or Hagara, for example, because there's too good a chance the proc will be wasted, whereas I always use my compass on Ultraxion. It may well be that on certain fights, Heroic No'Kaled is better, but the only way to figure that out for you is going to be parsing the fights using the two weapons, or else simming out different length fights using both weapons. I would postulate that Hagara and Spine are good candidates for using the axe, because, again, you spend a bunch of time out of contact.
With 30% buff live now, I'm guessing you could get most of the kills using a nice [Survivor's Blade].
The way I understand the daggers, is that on average they outperform Heroic No'kaled. The issue is that they have a wider margin than No'kaled, and the "floor" for the daggers extends below the "floor" for No'kaled. In other words, with terrible RNG for both weapons, No'kaled would edge out the daggers, but with great RNG, the daggers should easily beat the axe.
There's a few other factors that skew the results based on the fight (like No'kaled's proc not being carried over via Blade Flurry), and I feel safe saying that the daggers, on the whole, are better.
The energy regen part of Haste is less than half of it's value. It is always worth using Adrenaline Rush when it's ready so it can be affected by Restless Blades (assuming you stick on a target for the duration) for the increase in white melee damage and it's subsidiaries (Poisons, Main Gauche).
I wonder how many times we'll have to specify this before people stop overexaggerating the energy capping problem.
Here's the one I was looking for.
And the way trinkets drop for our raid, I'm assuming that a lot of rogues use whichever trinket they're lucky enough to get...