***BEWARE*** AC1900 IS NOT A NETGEAR MODEL NUMBER! THEY ARE MANY / NOT THE SAME!
To start, here are all the AC1900 (AC is type of WiFi, 1900 is the combined maximum Gpbs bandwidth) Netgear routers:
C6900
R6900
R6900P
A7000
C7000
EX7000
R7000
C7100V
They're all AC1900's. The ones starting in "R" are your standard AC wireless router. Ones beginning with "C" are AC wireless routers with built-in cable modems, "A" is a USB adapter, and "EX" are Mesh Extenders.
While the R6900 is "okay" and the R6900P is "better", the one you need to focus on is the R7000. It offers NETGEAR Armor™ and Circle® Smart Parental Controls, but lacks MU-MIMO (multi-user, multiple input, multiple output) for high traffic/multiple devices. MU-MIMO can be found in the R6900P and R7000P (AC2300).
Released in 2013, the R7000 is a Netgear workhorse that is still supported (as of 02APR21). It makes a number of best routers lists, and is the number 1 suggested router of Charter/Spectrum. It also has the best range/coverage of any of the three-antenna AC routers in its class. The only shortcoming of the R7000 is weaker 802.11 b/g/n 2.4GHz connections. You can tell it was designed for 5G AC.
Verified purchase: YesCondition: Pre-owned