@Scottiefeng V-ray image took 6 minutes total on my home renderfarm, which consists of (3) machines, x1 3930k @4.2 GHz, x1 Xeon x5650 (24 thread), and x1 Laptop 4700MQ processor, all machines using Intel EMBREE Raytracer, which improves V-Ray rendertimes by about 30% just by enabling Embree (!!)
Octane render took 1 hour 20 minutes on 2x GTX780s 3GB, 16000 samples, PMC, Octane Plane Lights at the Windows, OctaneSun outside, 3dsmax plugin. It definitely took a loooong time, but in my opinion, Octane has better light propagation and better reflections. Though V-Ray produces less noisy results in far less time.
V-Ray however, for the speed/quality, is pretty much unbeatable I would think, for now.. However it will be interesting to read the experts on Octane Render, what they have to say about why Octane produces more photorealistic results than V-Ray. In my opinion, Octane is superior (we all know it is), but they are both very capable render engines. Any Octane experts are welcome to explain to us why it produces simply more realistic lighting results? =) Unbiased is the future, undoubtedly.
But... I'm still not saying which image is which renderer

.. I want to Pros to post below!

2x GTX780 3GB, 1 3930k @4.0, 3xAMD 1090T 6-core (for vray), 16GB RAM, Win7 64. + Octane (learning and hoping, lol)