First of all they dont give you enough xp I mean these creatures are tougher, Ive gotten through it but died on the 4th level so no greens and frankly the greens in Sorrows Furnace are better and easier to obtain. Takes too long, not worth the effort.
I don't know if the SF greens are truely better. The ones you get there are pretty good too.
And yes, you get greens down there too, but I don't want to spoil too much.
well, now you can get them from the three mesmer bosses on the fourth level. typically, each one drops 2 greens. So there's a high chance that a 6 man team can all be happy.
And yes, you can 6 man team it, we got to the third level with four man.