Definitely Vaynerchuck... Parker values some aspects in wine that I do not (what I would call overextracted fruit bombs), and while Gary might appreciate them as well... His wine reviews comment on style preferences and who might like the wine more than others... rather than some absolute good or bad rating from Parker. Parkers reviews are harder for me to decipher in that way, so I've just come not to trust his scores in many regions.
And though he's in sales, I've never been disappointed in a Gary recommended/scored wine - noting that I'll skip some b/c the style doesn't sound my speed.
Also, I'll say that Gary seems to value a broader range of styles than Parker. (It seems to me.)