I have a netgear r6400 and really like it. Strong signal throughout the house (townhouse) while the router itself is positioned in the basement.
However, if I going to pick up a new router, I would consider Ubiquiti Unifi Secure Gateway and Unifi AC-Pro if you are somewhat technical as the setup is supposedly not as straight forward commercial grade routers. They are enterprise grade equipment at a relatively similar price point (~$230 for both). Feature wise there would be a ton of things you don't use, but the range and signal strength are supposed to be great. And if you ever added an additional access point, they can hand off you connection to each other.
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