My honest review:
First impression did have me worried. The mouse is INCREDIBLY light, so much so that for a second it seem like it would feel cheap. But that couldn't be more wrong, as soon as I had it on the mousepad and my hand hit it, every bit of worry about it being cheaply built went out the window.
I came from a Razer Basilisk v3 Pro. And it performs just as well in some areas, but outperforms the v3 pro in others. It's arguably more comfortable, definitely lighter, and offers 99% of the same features. The exo-skeleton style allowed them to not only shed weight but also add some tasteful aesthetics. It's easily top 3 coolest looking M&K combo I've seen. It also has very similar battery life to my v3 pro.
Now, the few small things I don't like:
first and foremost, the software. While it's clean, very user friendly, and reliable; It takes a few seconds to swap profiles, after already taking a few seconds to alt-tab out to the software. Where as with my v3 pro I could change it via a hotkey or the software almost instantly. Not a huge issue especially if, unlike me, you are able to remember to swap to whatever profile before launching the game. I would love a "hotswap" ability/button.
And the lack of Left/Right clicks on the scroll wheel. I play a good many games where I can greatly benefit from having more mappable buttons on my mouse. So I lost 2 of my "item" buttons; which again, not a huge deal, but those things would make it perfect,
Over all I give it a 4.999 out of 5, I would buy the exact same mouse again if I had to replace it.