Router to Replace AirPort Extreme

I think this was a topic of discussion in the past, but I don’t see it listed here, so excuse me for any duplication. I’m looking for a good router to replace the ill-fated AirPort Extreme. Mine is working fine, but as time goes by, I’m starting to worry about security issues. I have two questions. Is now the time to replace my router? If it is, which one is recommended. I live in a townhouse, so I don’t need anything to boost signal strength. Thanks.

There are a lot of great alternatives in this thread