I am not strictly loyal to any particular brand, but have found the following to offer good value and quality in my experience:

Flashlights - Emisar, Convoy, Sofirn, and anything BLF
Phones - OnePlus
Laptops - Lenovo (more so IBM) Thinkpads, Dell Latitudes
Computer parts - ASUS, AMD, Crucial, Samsung, Intel, Nvidia
Knives - Kershaw (had a Leek since I was 12, and it has survived a lot of abuse), ZT on the high end
Guns - S&W, Colt, Ruger, (old) Remington, IKICKHIPPIES (the SLAP goes on everything), GALCO
Trucks - Ford (all day long), Toyota
Cars - Toyota
Power/Hand Tools - Dewalt, Craftsman (of yesteryear), Ingersoll-Rand, Bosch, Fluke, Klein, Magnepull, Greenlee, RCBS, Irwin
Small gas/petrol powered tools - Echo, Honda
Tractors - Kubota
Clothes - Under Armour, Ariat, Levi’s, Carhartt
TVs - LG
Printers - HP Laserjet
Servers - Dell Poweredge
KB & Mouse - Logitech (basic), for fancy KB’s it is either DIY or something like DAS Keyboard
Gasoline - Costco, Buc-ee’s (they have ethanol free gasoline in some pumps, and unleaded regular has been 1.99 since they came to town)

The full list would take all day.