I really like the costumes of the Arkham Knight, Deathstroke, Flashpoint Batman, and several versions of Cyborg. I just really like armored looks because they just look cool to me.
One of the is Batman of Zur-en-Arrh.
Costume originally worn by Tlano.
Image from Batman #113
One of my personal favorites is Damien’s version of Robin. It is a completely fresh take that you can tell is heavily inspired by his training with the League of Assassins. Every part of it is sharper and more layered, which makes it impossible to mistake him for other versions of the character.
Lexs blue superman suit.
Really liking this alternate costume Justice League Unlimited did with Black Canary for one of the action figure three packs
and I liked it even better when I applied it to her in DC Universe Online
what do you think are the best suits of all time
My favorites are
Rebirth Wally west
Kingdom come Superman
Flashpoint Batman
New 52 Wonder Woman
Superman Rebirth
There have been so many good costumes mentioned so here’s a few to add to the list.
Neal Adams Green Arrow
Neal Adams Deadman
Dave Cockrum / Mike Grell Legion of Superheroes (all of them)
Marshall Rogers Deadshot
Jack Kirby New Gods (all of them)
George Perez Vigilante