Condi necro still brings more to the group in PvE, so I’d stick to that. Also, the jagged horror nerf is worse for raids than it is for fractals. I also wouldn’t take death magic whatsoever anymore and instead always take blood magic, at least looking at how things are now, haven’t gone through/haven’t seen any tests yet.
In PvP, power necs are rarely ever seen because lots of their power kit just doesn’t do all that well there, though the axe buffs (especially the unholy feast one) might’ve made this a bit more valid I guess. Someone who plays more PvP than I do can probably say something about that.
If you just want to play necro, either will be fine, dps is more or less equal, but condi overall brings more and is generally more accepted. For running around in open world I’d play power over condi every day though.
Condi necro is sought after mostly because of Epidemic, which is really the only thing a necro can bring to the party that another class can’t. Power reapers are still pretty good DPS slot though (granted, other classes are better picks).
As for pvp, power reaper is fine (for me personally, I do better with a power build), it just requires understanding the class, and playing tactically, not rushing in as one would with a melee heavy armor class. Dagger/warhorn is a great combo, and coupled with axe/warhorn for range, especially now after the axe buff, it’s quite solid combo. Staff is a pretty good choice for power, too (I prefer axe though, despite the lower range and no aoe skills). Greatsword is less useful, but still viable in pvp as well, but it requires a lot more skill to time things perfectly, and can be easily interrupted. Very useful in coordinated team fights though.
Biggest problem with necro imo is that people simply copy builds from metabattle, and follow the rotation, not many actually take the time to understand the class. This might work with more forgiving classes, but not with something like a necro or a thief.
and the quality’s pretty awesome too!