Ok just got done with this part of my epic this evening. heres the scoop all in one post so u dont have to read a thousand threads just to get the info. Mind u these kills were done with a group of 4 (lvl 65 pally 100ish aa, lvl 65 druid 100ish aa, lvl 65 sk, 25 aa, lvl 65 chanter 90+ aa, and me lvl 60 monk, 8 aa, all with NON-Elemental gear, just standard gear most 60+ folks have honestly).
OK onto the meat: Deep + Vorash fight- easy. Both cannot be slowed by a chanter. Hit pretty wimpy, only proc thats annoying is vorash, his stun is resistable with high MR. so no biggie there. Deep is also pretty easy, SK took the Deep Pally took Vorash. both went down in about 3 min.
Xenevorash- Easy there too for us. Still chanter couldn't slow or nuke due to high MR. Stun lasts for 30 seconds, he cons even to 65. Hits for around 200-250 stun procs for about 500, less or nil with high MR.
Over all this can be done with one group of 60+. Druid never went oom, and nukes were flying all over from her. pally had a little prob with xene stun and aggro keeping. If u are one who wants a slow try a shammy. chanters are essential for this fight due to Haste (VQ), MR, and VoQ. Pet helped with DPS so its all good in the end. Over all, if u are fighting in PoV, or PoS and your group is having no probs... these fights will be cake for ya.