Here's my vote:

1.
https://ip.bitcointalk.org/?u=http%3A%2F%2Fs25.postimg.org%2Fkm3y8hxwv%2FORA_202_800_coins.png&t=543&c=vTmFB5SyHOC1yw
I especially like the one with the black design. It reminds me of the Umbrella corporation 

2.
https://ip.bitcointalk.org/?u=http%3A%2F%2Fi.xomf.com%2Flgzkd.png&t=543&c=rV3utCJ8Mw0fLA

3.
https://ip.bitcointalk.org/?u=http%3A%2F%2Fs25.postimg.org%2F5nrx9rrhr%2FKORA_104_256.png&t=543&c=QtaQq3aGy-ueHA