During installation, the router sent several data packets to an Amazon server in the US. These packets contained the configured SSID name and password in clear text, as well as some identification tokens for this network within a broader database and an access token for a user session that could potentially enable a MITM attack.
Linksys has refused to acknowledge/respond to the issue.
Not an expert but I’ve been very happy with my synology wifi router, plenty of range for my house. I’ve had good luck in the past with ubiquiti access points for an application that needs to cover more square footage.