I currently play a shadowpriest on a casual raiding/m+ level. We've cleared normal CN as a guild and working on heroic. I want to advance more in M+ keys as well. I have fairly good parses in CN, mostly purple with a couple orange (sorry about the terminology just getting started with logging). For pure PVE content, raid/m+/torghast and solo play i'm considering switching over to a warlock for the next tier. Utility of health stones, summoning, portals, battle rez and M+ performance seem to outweigh what a priest can bring. The priest does very good single target DPS but there isn't much after that, I have the flexibility to play either class with our raid comp. Thoughts? Pros/cons? My apologies if this question has been asked numerous times.