I thought the Sisters fight was the prettiest of all. And managing moon phases was SO RIDICULOUSLY FUN. I also really enjoyed the Desolate Host, which is odd, because I don't particularly like bosses of that nature.
I've only done Maiden so far. Jumping into a hole at the right time is a fun mechanic.
I love Maiden cause it's the only fight i got an orange parse so far and it was rank 12 at the time (27%uptime on ascendance form just the gloves op xD)
Kil'jaden fight. Its not just for memories of sunwell but also the awesome cut scene. You get to feel something, something of pity or understanding for the demon who has #$%^ed so many people up its not funny... They havent made me actually give a *!@# for the bad guy since freaking Arthas!
From the bosses I've seen so far, I liked Sisters of the Moon fight the most. I enjoy the variety of mechanics, movement and many things to keep an eye at the same time.
So far, Maiden without a doubt. Memories of the Thaddius fight are largely why. I haven't experienced Avatar or Kil'jaeden yet though.
Maiden, I love the Guitar Hero part!
Definitely Maiden. Props to whomever came up with her mechanics because they, for a change, aren't just faceroll. You gotta bring your brain to the raid now. Kudos.
I enjoy Maiden fight most because of the simple and cool mechanics. Nice break from some other bosses in the raid. Quite fun zone.
Mistress Sassz'ine - lots going on, with surprise giant fish!
I love Sisters of The Moon because of the lore behind them. Plus I'm a huge night elf fan! ;D
Definitely Maiden, brings back all sorts of old-school feels!
Maiden of Vigilance is easily my favorite. It emphasizes teamwork and mechanics instead of solo performance.
I enjoyed the Mistress Sasszine fight. I just simply enjoy naga and all the eels and other aquatic creatures she summons.
Favorite boss is a really hard choice. Probably the Maiden fight. The mechanics, collecting/dodging balls and jumping into pit with bombs, are really fun. Next favorite boss would probably be the Fallen Avatar. Lots of things that you need to dodge and pay attention to.
Sisters of the Moon...because NEs that I can kill! Woot!
Kil'jaeden because the good old days, jeez that many wipes....
My favorite fight would probably be Fallen Avatar. I really enjoy the encounter mechanics and the change of scenery when the Avatar breaks the floor.
For me it's a Demonic Inquisition fight. It's mechanic is not very unique but I like it. You have to think how to deal with your group managment, and how to deal with specific bosses abilities.
http://www.wowhead.com/goroth-tomb-of-sargeras-raid-strategy-guide#mythic-difficulty because its the only one ive managed to beat Dx I'm sure KJ will be awesome when i get there. :/ Man I hope I win one of these boxes, the whole idea of the prize is sweet i love mystery stuff!