The Samsung looks promising, but looks like an old style laptop keyboard. Those kind of keys are easy to break.
The MSI has nice hardware, but I dont think their build quality is better then Asus. They are made mostly of regular hard plastic like seen on most regular laptops. They are also more "flashy" with their red lights and plastic everywhere. Not something I personally would care for.
I have also had zero of the problems Boosted_R speaks of, and I have owned 3 ROG laptops total (G60, G53, G74). I have only seen the quality going up, which was the reason for my most recent upgrade from the G53 to the G74. Better keyboard and easier access to upgradeable components.
The best gaming for your dollar, you cant get much better then Asus. There are laptops that will beat it, but they will be more expensive.
The only downside I can say about the G74, is the non upgradeable 560m. But its also a non reference 560m with 3GB VRAM.
(ROG has simply become too expensive compared to the competition with same specs... 😞 )
MSI GE75 Raider 10SGS - i7 10750H - RTX 2080 Super - 32GB Ram - 1TB WD NVMe - 2TB 960 EVO - 300Hz 17inch Display
RETIRED: ALIENWARE R17 R5 - i7 8750H - GTX 1070 @ 1.9Ghz - 16GB DDR4 - NVMe 970 EVO 1TB - SSD 960 EVO 1TB
SOLD: ASUS G703VI-XH74K, RETIRED: ASUS G752VY-DH72, RETIRED: ASUS G750JH DB71 , RETIRED:ASUS G74Sx DH72