They were high-quality. I used one for years, even had a hard drive attached for a while for Time Machine backups, which worked well.

I had to stop using it for some reason--it wasn't getting updates, or newer WiFi cards weren't working well with it, something--and everything I've used since has been disappointing. Even at the price point of the AirPort, they all have various issues. I wish this technology was a done thing.