Which Revered Red Veil Reward should I get?

[bat]

There's:
-Gleaming Blight
-Eroding Blight
-Toxic Blight
-Malevolent Sigil
-Covert Sigil

Would it be possible to sell any of these for a decent amount of Platinum?

[AzoreanEve]

You cant trade sigils
And ive yet to see anyone asking for those red veil mods

If you're ranking up Red Veil directly get a sigil because it's an upgrade on the one you already have.