Legendary Seliph Merging

So I have 3 Seliphs, one merged already. I have a +1 +Res one, and just got a neutral one. The neutral one with merge gets +2 atk +1 hp and +1 defense over my +res one. Which would you go for?

I’m running DC/His B skill/Atk Smoke/Res Fortress incidentally. Thinking the res one might be etter but I figured I’d ask.

I’d keep the +Res one as his base Resistance isn’t the greatest and could need some help against the many strong magic users :feh_birbpeek:

go for res and give him mirror stance steal