srudy :
Need help with home networking. I currently have an old Linksys EA6300 that needs to be replaced. I am trying to decide between either a Linksys EA9400, a Nighthawk X6S or google Wi-Fi. I have a 2 story home 3500 sqft with the router in the basement mechanical room. Thanks for your help.
Having a router in a basement generally isn't ideal, unless you're
distributing some of the wifi signals over coax and/or connecting to rooms' Ethernet runs that way.
In terms of transmit power alone, the
EA9400 can do 989 mW on 2.4 GHz and 993 mW on 5 GHz, the
R7900P (X6S) can do 989 mW on 2.4 GHz and 979 mW on 5 GHz, and the
AC-1304 (Google Wifi) can do 656 mW on 2.4 GHz and 535 mW on 5 GHz. So the loser is Google Wifi.
Between the EA9400 and R7900P (X6S), the EA9400 has double the RAM (1 GB vs. 512 MB). And it has 4-stream MIMO, so while both support NitroQAM, the link rates could be 33% higher with the EA9400. With meshed ranged extenders like Google Wifi, you can't predict the network hops used, latency between them, level of hidden node interference affecting throughput, etc., but in any case, that's only 2-stream MIMO. So the EA9400 is better.
But I'm not sure why you've narrowed it down to just those 3. The ASUS RT-AC88U is 4-stream MIMO, lets you mesh other routers down the road with AiMesh (AFAIK), and lets you upgrade the antennas to improve their gain. You don't get the latter 2 attributes with the EA9400 or R7900P (X6S). And it costs less. If you're really putting the router in your basement, you don't want to shoot yourself in the foot by buying a router with U.FL antennas you can't detach and upgrade.