Since I'm uninformed, what is so great about this particular gun? Is it the barrel? BCG? The furniture is as basic as it comes, nothing wrong with that, but it is basic.
The biggest thing for me is their transparency. They're willing to tell you everything. Where they source their barrels, BCGs, lowers, rails...they've revealed it all.
They also state the tolerances those products are produced to. We all know what their gas port sizes are. We even know what steel they use for their firing pin retainer.
They publish their in-house QC process.
And they're rabidly pro-gun.