This is...a bit of a conundrum I face. I have a decent IV Effie with almost enough copies to max merge her(need 1 more and a lot of feathers), but I also just pulled a perfect IV Nowi(+atk/-HP) Their scores with optimal builds are only a point off from each other.
Effie was gonna run Slaying Lance, Pivot, Aether, Double Close Defense, Venge Fighter, Panic Ploy, and Nowi Lighting Breath Atk refined, Repo, Aether, Steady Breath, QR3, Drive something, Close Defense.
Pros and cons of Effie.
+Immune to the bonus damage effect of Poison Dagger(not as high priority since I have a DC sigurd)
+Higher Atk
+Easier activation of Tactics C-skills(paired along side Fae and Sigurd)
+The "QR" effect lasts longer thanks to Venge Fighter
+No weakness to Falchions
+Can add Armor March when there's an Armored bonus hero
+Only need to pull one more of her, and the current merged one is +6
-Poor Movement
-Weakness to the armor slaying weapons that are growing in popularity
-Lesser Defenses
-Can't Distant Counter without surrendering the A-slot Close Defense
Pros and Cons of Nowi
+Better movement
+Higher defenses(I think)
+Natural DC, allowing Steady Breath
+Able to give Fae Dragon Buffs(not immediately planning to use them, but it's there)
+Higher levels of adorable
-Weakness to Falchion(a well-built Lucina or any Alm with Twin Lions can kill her)
-Harder Tactics activations(if included to the Arena Core of Fae and Sigurd, the Bonus Hero can't be Infantry)
-Weakness to Naga(not seen as much at higher scores, but it's still there)
-Lower Res(fairly negligible. Sigurd kills Green Mages and most Red mages, Fae kills Blue, Green(non-Naga) mages and Green dragons, to include Myrrh and Grima)
-Still need to pull...3 more copies of her and 5 star all of them