I'll admit that I’ve been a Lehko user for a long time. I never really put much thought into changing it until this week when I started reading other players’ opinions.
From my personal perspective, I’m starting to feel like I’m not getting as much from Lehko anymore. I play DRK, RUN, DNC, COR, RDM, THF, and BST, so Cornelia might help me more overall.
Ephramad for DRK and DNC in high buff situations is also very tempting though. Those are my main damage jobs at the moment. I am lacking augments on Nyame, but am actively working on that with my group every week.
Of course, I know I could just pick one, test it out, and swap later if I don’t like it. At the same time, I’d rather pick one, adjust my sets around it, and not have to revisit the decision again for a long time.
From what I’ve gathered from reading other posts:
Lehko
Best if you are supremely geared and hitting 99999s almost all the time. It may also be better for players who struggle with accuracy or who don’t often join party setups with top tier buffs and debuffs.

Cornelia
Benefits most jobs in most situations due to the WS damage, but it still depends on the job. Magic WS on COR, for example, benefit a lot from this.
There’s also less to think about with Cornelia. Might be more appealing if you are lacking augmented Nyame.

Ephramad
Clearly excels when attack is capped, but the key is actually knowing when that is happening. The top players using this will usually have a very good understanding of their buffs and will maintain separate sets for attack capped and uncapped situations.
A lot of players aren’t willing to go that far. It may be stronger, but knowing exactly when to use it can turn some people off.
I also read something earlier about MNK, WAR, and BLU benefiting because they lack PDL options from other sources, but I can’t remember where I saw that.

In the end, I don’t think this should be about ganging up on people for choosing one over the others. The amount of debate around them tells me SE probably succeeded in making all three viable, which is a good thing. Having options is great.
