We reviewed the Roomba 960, giving it 4.5 out of 5 stars and an Editors’ Choice Award—and that was at its full $600 price. “The Roomba 960’s flawless navigation, stellar cleaning, and advanced features set it apart from all other robot vacuums,” we said. While that review is more than two years old, the Roomba 960 is still an excellent vacuum. It features Amazon Alexa and Google Assistant integration for voice control, and an intelligent mapping feature. The Roomba 960 has a three-stage cleaning system with rubber brushes, and you can control the vacuum via Wi-Fi using the iRobot smartphone app. As for the “refurbished” part of this robovac, it comes with Amazon’s 90-day Renewed Guarantee, which means it will work and look like new. If it fails that promise, you can get a replacement or refund within 90 days.