Honestly? I still think that Freya + 3 was the most difficult of all the achievements we've done.
Agreed. Freya was the most difficult. Mimiron was the most fun. Vezzax was the most stressful (miss a kick and we probably wipe). Yogg was an "on the edge of my seat" kind of fight as I didn't have him targeted in P3, so I had no idea where we were on the progress. The threat management was really tricky on the adds too.
All in all, these raids were some of the most fun I've had in this game.

Bring on more hard modes!
