My Armour Emblem

I was wondering if I should replace my hector with amelia
I had Zephiel but now it is gonna be BK
BK
Effie +atk-spd
Hector +spd/-def (i also have a +spd-atk in the corner)
my amelia is +atk-res which is pretty good. whats your take? I use them as my arena defense and sometimes atk so i try and center it around that...
Thank you very much for the input. I really appreciate it!