So, no ones reply even after 15 hours, because Razer sucks
I owned two of their mice, the first mice scrolling wheel died after year of usage.
while Razer mamba 4G is too damn heavy, the side rubber peeled off like banana skin.
random malfunctioning.

TL;DR version: buy Logitech gaming mouse, affordable and much longer warranty.

I owned 2 of their mouse, and was deeply disappointed by the quality.
If you have deep pockets and don't mind to be the victim of poor quality products, go ahead.

Now i'm using G602.

I don't own it, but I've always liked the design and the looks --I try it out whenever I can... and it's really.. really uncomfortable and not really worth it at that price.

No matter how much you can change and angle the parts of the mouse and stuff, it still feels very square in the palm of our hand, which is naturally curve --so quite uncomfortable.

Like 1024kbps suggests, the Logitech G602 is amazingly comfortable, battery also can last for months, lots of macro buttons, great software, 3 years warranty --if I'm not mistaken.

Ouroboros is about RM469
+Looks cool
+Modular
+Wired and wireless
-Battery life is quite bad
-Square
-Uncomfortable for long run
-Synapse 2.0 is still a very heavy and buggy software
-Not a lot of macro buttons
G602 - RM200 to RM280 depending on where you find
+Looks classy
+Long battery life
+Comfortable
+Macro buttons yooooooooooo
+3 years warranty
+Good software
    Like no negatives only lol

Go and read lots of reviews and comparisons... but it also ultimately boils down to your taste: So go and try out both mice