We're in, after a first advance last week up to the Gunship Battle, we've gone through it this week with no problem on Marrowgar or Deathwhisper, and we've been able to make our first tries on Deathbringer Saurfang after having had too much fun with the jet-packs during the Gunship battle, all of that in 10-Man.
Ok, I know a lot of others have already cleaned all of that, I know some could say it's not that hard, but we're mainly a 10-Man guild and we're not 25-Man geared for most of us. I'm relatively happy with our advance. The first week was really a revival of the Ulduar period "Oh my god raiding is hard, but it wasn't so hard in Naxxramas". But the second week and now the third have been ok with people being more serious about the raids and hence things going much much better. I blame edc normal for having been way way too easy and the hard mode so much harder that we couldn't bring enough people regularly to seriously advance in it.
Anyway, Saurfang is a baaaaad guy ^^ I'm sure it's a lot more hectic in 25-Man but in 10-Man the hard part is that you can't lose anyone until the very end (or at least the last 5%). We need everyone to heal / dps the blood beasts and dps/tank Saurfang.
We used a 2 tanks / 3 heals / 2 melee dps on Saurfang / 3 dps on beasts or Saurfang group. Once we got the positioning and dealing with the beasts ok (no hunter for traps but an elemental shaman doing all the jog with earthbind totems and push backs), we were able to grind Saurfang down.
Our best try left him at 10%, the hard part is that nobody in the group should lose his concentration until the very end. One heal missed, one blood beast not cced/dpsed fast enough, one tank doing an aoe on the blood beasts pop, everyone of these can be the cause to a lot of blood/life for Saurfang and result in a wipe.
Even if we didn't down Saurfang yet, everyone enjoyed the fight, it is a fight that requires a nearly perfect execution from the whole 10 people in the raid, which is a real change for a normal mode, and one we liked.
On a side-note, I'll try to post a Marrowgar Healing Through guide tomorrow, as we got this fight nearly perfected in 10-Man and we've tried it 2 nights now in 25-Man (we decided the raid alliance needed some 10-Man experience before we go there in 25-Man again, too many slow movers ;p).