Brand loyalty is great, but let me relate something that happened to me a long time ago. I was at a gun shop that had a display case with a dozen or so custom knives. I was looking at them and man walked up to me and said, "Cooper makes the best knives in the world." Since I was a lot younger, I asked if he ever heard of Loveless, Moran and a few other top makers. He said that he never heard of them, so I asked him how he knew that Cooper made the best knives in the world if he never heard of or held any other maker's knives? That pissed him off and he walked away. Since then, I have learned that it is best to just smile and nod like I'm are agreeing.
My point is, if you haven't tried another brand, how do you know that Brand A is the best?

Reading the spec sheet will easily determine the best materials, coatings and testing performed. A little knowledge and some research will allow you to expose overpriced, under equipped rifles competing with quality rifles on the market WITHOUT TRYING ANOTHER BRAND. Learn these terms and study why they are important.
M4 Feed Ramp Barrel Extension
M4 Feed Ramp Flat Top Receiver
T-Marked Upper Receivers
USGI 1/7 Twist Rates
USGI 5.56 NATO Chambers
Mil-Spec 11595E - Certified Barrel Steel (CMV)
Chrome Lined Bore and Chamber
Manganese Phosphate Barrel Finish
Mil-Spec F-Marked Forged Front Sights
USGI Government Profile Barrels
HPT (High Pressure Test) Barrels
MPI (Magnetic Particle Inspected) Barrels