Choosing new Gaming Laptop. MSI GS73VR vs. Asus GL702VM vs. Gigabyte P37X v5

Hello, what's your budget?
Based on the links you provided, the 1st first costs $1800. You can find laptops with better specs with that kind of budget. For e.g., here's a couple options:

http/www.xoticpc.com/msi-gt62vr-dominator-pro-087.html
https/www.amazon.com/Asus-G752VS-G-Sync-Gaming-Windows/dp/B01KB0W57O/ref=sr_1_12?s=pc&ie=UTF8&qid=1486537136&sr=1-12
https/www.amazon.com/GL502VS-DB71-Full-HD-Gaming-i7-6700HQ-Windows/dp/B01K1INYD0/ref=sr_1_2?s=pc&ie=UTF8&qid=1486541973&sr=1-2

I think you should go with the MSI because it has new Pascal based GPU inside. Even Gigabyte has it but I like and prefer MSI more than Gigabyte. Also, if you are buying MSI then don't buy the one which you linked above because its 2016 model and MSI already launched 2017 model of it which has newer 7th Generation Kaby Lake Intel i7-7700HQ processor.

Here's the link to it - https/www.amazon.com/MSI-GS63VR-Stealth-Pro-230-i7-7700HQ/dp/B01N5JUPWO/

I just read that you also don't want to give up bigger 17-inch display. Well, I think you should, because you're trading 2 inches of display for getting newer generation hardware here!

I'm looking at similar machines myself currently, also solely 17 inch.

There are newer versions available of these models with Kaby Lake and GTX 10 series:
- GS73VR 7RG/7RF (and some other variants)
- GL702VM-DS74 and GL702VS (w/ 1070 coming this month)
- P37x v6 (/w 1070 but no Kaby Lake, v7 might come very soon since the P35x v7 is already out there)

I guess the reliability of these newer versions carrying the same chassis and mostly the same internals is also slightly better because of consumer feedback being applied to manufacturing.

Best would be to sift through as much reviews as possible and base your choice on that, sites like Techspot (http/www.techspot.com/products/laptops/) aggregate reviews.

Some things I'll note out:
- The MSI is the lightest (around 400g lighter), can get very hot due to slimmer chassis, no G-Sync
- The Gigabyte has a more neutral design, thicker bezels, seemingly can become very loud under load, no G-Sync, no Thunderbolt 3 for possible future expansions of external graphics card
- The Asus doesn't have RGB keys, has G-Sync, no 4K display option available (yet), less noise/heat because thicker chassis

G-Sync is welcome when e.g. your screen refresh is 60Hz and your framerate drops below 60FPS - will smooth out the imaging. I believe it hasn't much effect above 60FPS.

Lastly also note whether you'd like a 1060 or 1070, the latter is my preference because it's more future proof (since you stated you'd like to use the machine for like 4 years), However, it also greatly increases the price of the machine.