B737NG/Max still rules the NAV world with RNP and GLS
Perhaps notwithstanding some of the "less than complementary" comments elsewhere in this thread, ...the B737NG, and particularly the Max still rule the world of NAV, with excellent fleet leading RNP ops capability (e.g., just try to fly procedures like at NZQN, PAJN, CYLW, or even KDCA with tight RNP, to the same reliable capability in ANY other transport or corporate jet) ...and also GLS (e.g., especially with RNP matched with EDFCS and LAND 3 monitored by the HUD AIII). The B737 is as good or better than any other current or planned narrow-body or wide body jet produced globally... The B737 remains the fleet leader for much of NAV capability, and likely will remain so for at least the next decade or more (and that includes all current offerings from both sides of the Atlantic).