I've got 5 NE shadow priests, currently at lvl 65. 80's with resil gear can still take me, but only because I get too many resists when trying to DOT them. Anything less than an 80 is dead fairly quick, as 15 my dots (pain, VT, and VE) burn fairly good ... I've got about 400 spell pwr mostly from quest gear and my DOTS alone will do about 30k damage in 20 seconds or so ... Both MB & SW-death hit for about 850-900 each and MF ticks for about 230 x5.

I chose +dmg gear from quests rather than +stam or +int, so they only have about 5.3k hp I took them into BG's (2-3 games of AV and 2-3 of AB) and got waxed pretty bad - mostly because I don't think I was used to the mechanics - but in world pvp, they are simply amazing - burst damage is huge. I rarely lose a single toon, even against multiples. DOTS + fear = game over. Occasionally i'll have to throw a 5xrenew on one of the guys, or hit 5x holy nova once, but am surpised at how I hardly ever need to heal, which is great.

CONS: They are not viable for instances (unless my strategy is wrong) and will run OOM quickly (regen is fast tho with hymn of hope, dispersion, and replenishment).

I've considered switching to disc, but survivability has only been an issue in BG's, and only because i've been vastly outnumbered. I think I could consistently beat a group of 5 within 6-8 lvls of me in world pvp.

I've got a few short videos vs group-quest elite mobs, and a few pvp ganking videos, but nothing much ... anything you would like me to record & post?