I avoid Quinn when ever I can unless Im fighting multiple elites or champ mobs solo his dps is horrible. I geared both Quinn and Vette as well as I could at 40 and things die so much faster using Vette. There may be a small amount of downtime requiring channel hatred for 5 seconds between fights but the faster killing speed makes up for it. When I get to 50 I'm gonna get Jaesa geared again because I still think she was the best. Does anyone actually use Broonmark for anything at all ugggh I hate him. Might give Pierce a try also.
Ive tried Carnage and Annihilation and honestly even at at 46 I dont see much if any appeal to use carnage...I may just be playing it wrong but the damage seems very lacking compared to Annihilation and it seems like more of a button masher Battering Assault, Force Scream, Gore, Massacre, Ravage, Massacre, Massacre, Massacre, Massacre, Massacre, did I say Massacre...I do however love all of the roots carnage gives for PVP Ravage 3 second root every 30 seconds(or Less), and Deadly Throw 3 seconds every 15 seconds, add in Force Choke for another 3 seconds.
Have yet to try rage but have seen people pull really good numbers with it and have been out dps'd by a lesser geared Marauder same level, fighting the same Elite mobs. He was using Jaesa and I was using my newly geared Vette(43-45 blues). On 2 Elites he would kill them about 5-10 seconds faster than me and singles still about 5 seconds faster. Maybe it was an issue of skill but I think it was the rage tree.