Help narrow down laptop decision

I've been looking for a gaming laptop and I'd like some input on others experience with the following brands. This will be used mostly for Fallout 4, Borderlands 2 line of games.

I can get the following locally or sent with free shipping.

Entry level Alienware 17 1499.00$
http/www.dell.com/us/p/alienware-17-r3/pd
6th Generation Intel® Core™ i7 processor
Windows 10 Home
8GB Memory
NVIDIA GeForce GTX 970M with 3GB GDDR5

Asus G752VT-RH71 1569.99
https/www.mynavyexchange.com/asus-g752vt-rh71-notebook-pc/10030630
17.3" IPS FHD matte display (1920x1080)
Intel Core i7-6700HQ Skylake processor with 2.6GHz (Turbo up to 3.5GHz) processor speed
16 GB System Memory (DDR4)
1TB 7200RPM hard drive
NVIDIA GTX970M 3GB GDDR5 video graphics

MSI GE72 Apache Pro-001 1469.00$
https/www.mynavyexchange.com/msi-ge72-apache-pro-001-17-3-gaming-laptop-pc/10281009
17.3" Full HD eDP non reflecting display (1920x1080)
2.6 GHZ Intel Core i7-6700HQ processor (3.5GHz w/Turbo Boost)
16GB DDR4 of 2133MHz memory
1TB 7200RPM HDD + 128GB PCIE SSD
NVIDIA GeForce GTX 970M graphics

I've also seen a drop in price on the MSI GT80 Titan sli 263 around 2000.00$
Intel® Core i7-5950HQ 2.9 - 3.7GHz w/ Turbo Boost Intel® HM87
18.4" Full HD WideView Non Reflection 1920x1080 (16:9)
NVIDIA GTX980M SLI 16G GDDR5 (8GB each)
24GB DDR3L 1600MHz
Super RAID 256GB(128GB M.2SATA SSD*2 RAID 0) + 1TB 7200RPM

Thanks in advance for any input.