I say the black one- though the greyish one (not the white one you have) could match your armor pretty nicely! As it is, the black one's belly matches your armor.
Have you considered the brown tiger? And I agree with Lupis, the grey Summit Prowler sounds like a good match. But of those two, I like the first one better.
Silent as night, silent as death, silent as your last breath
~~~ Interested in HARPG? Check out Marandian's
~~~ (Closed)FR gems: (Click here for details) My DeviantART/My Petopia art thread
~~~ I cry inside every day, as common courtesy withers away. Are you part of the problem or will you help it grow?
Your armor will change in time (even if you transmog), so I wouldn't pick a tiger based on what looks good with your current gear at the moment.
I would suggest pairing with one that suits your character's personality, in addition to his hair and skin tone. If you have a certain color palette going amongst your other pets, perhaps you may want to choose the tiger that best compliments them as well.
Avatar & Signature by Jeydis
Come visit my lovely garden of dragons over at Flight Rising