>>23561685
The more knightly silhouette but still retaining some of the demon look as well
The fighter jet-esque huge V-fin
I kind of like how the butt-thrusters fill out the designs as well
The colour scheme is a big one, not having the garish blue from the traditional 4 thrown in.

And for reference, my favourite is the 2nd form. The extra red looks great on it, and the smaller shoulders + butt-wings makes it look like it was built for speed. I also prefer Hajiroboshi over Marchosias. Barbatos' pile-driver mace still takes the cake for main weaponary though