I've had SRAM on all my past bikes (NX 11 speed, GX 10 speed) and used to be agnostic and assumed both companies have plus and minus. But after my NX shifter acted up after some hundred miles, i replaced it with XT and can't imagine to ever going back to one of the wobbly SRAM shifting units. I also have an XT en route to replace my 10 speed GX, I didn't even price out a GX 11 or 12 speed. I like the instant release, the double-upshift and the firm feel (very important on shattery paths where my GX sometimes accidentally double-shifts).
I never tried their Eagle, so they may have improved.