Range gun only, the AR platform is distinctly superior, like it or not.
The reason the M16 dominates high power shooting isn't because the Army ordered the AMU to do it, it's because it's more accurate. The M14 has only two lugs that must be matched closely to the receiver, the receiver must be bedded to the stock, the gas operation has asymmetric loads on the bolt which also cause barrel bending during operation, the receiver can't accept a top rail to mount optics, any sling loads will transfer to the barrel thru the bands or by direct attachment which bends the barrel. You get an asymmetrically loaded receiver and bolt with a whipping barrel.
The AR uses a barrel extension that locks the barrel and bolt together with a ring of steel and 7 locking lugs to spread the load directly. The barrel can be free floated with the addtion of a simple adapter to hold the handguards off the barrel, with no sling load transferred to the barrel. The gas action has no operating rod to bend or bind the bolt (which got soldiers killed in the early days of WWII.) The pressure transferred to the inside of the bolt carrier actually compensates the load on the bolt and lugs allowing them to rotate with less stress. The barrel isn't bent with the stress of the piston and op rod pushing the bolt. The upper and lower receiver aren't stressed with anything more than bolt cycling, which is straight back only. It handles the pressure straight back.
The AR doesn't poop where it eats, that expression only has any value to those who are completely ignorant of the cycle of operation. Gas travels down the gas tube into the bolt key and then into the bolt carrier gas chamber, which is sealed by the gas rings on the bolt. As the carrier is pressurized, it pushes the bolt forward and the carrier back, exposing the gas ports on the bolt side to the chamber pressure, where it's exhausted out the ejection port. The bolt is rotated and THEN the gas key separates from the tube, while the cartridge case is pushing against the bolt face.
Once the case begins extraction from the chamber, any residual pressure in the barrel is exhausted by the open bore or the chamber. ALL SEMI AUTOMATICS EXHAUST GAS FROM THE CHAMBER INTO THE ACTION - DI OR PISTON.
It's Ok to love the Garand - for what it is. It's certainly less than acceptable to repeat misinformation and doesn't reflect well on the decorated heroes who have used either, in an effort to denigrate one over another. That's certainly reflective of a civilian attitude, not the character qualities the Army studies and works to adhere.
While I won't argue with the truth behind those points, my definition of a rifle for "just casual shooting, range time" has nothing to do with it being DI or piston driven. It has nothing to do with how many locking lugs the bolt has. It has a little to do with sling issues, but not a ton. It has nothing to do with my rifle dominating highpower competition or not. It has everything to do with which one makes me grin biggest when it goes bang. I don't think anyone has claimed the M1 to be anything it isn't. I don't think anyone has claimed the AR to be anything it isn't. I don't know what brought up war heros with regards to shooting an AR or M1 at the local range.
I don't know how many times I can repeat this. A rifle for "just casual shooting, range time" doesn't need to do anything more than make the end user happy to have gone to the range. It doesn't need to be designed to with highpower matches. It doesn't need to be designed to not poop where it eats. It doesn't need so much that you want to make it. All it has to do is bring the shooter a smile. That is why I don't understand how this thread has lasted for 5 pages. Is it impossible to believe that some people think the AR is more fun to shoot and others think the M1 is more fun to shoot? Do we always need to justify a rifle beyond that?