Cleaning Performance: Look for a robotic vacuum with strong suction power and effective cleaning brushes. Some models also come with features like tangle-free brushes for handling pet hair.
Navigation Technology: Advanced navigation systems can help the robot navigate around obstacles, efficiently clean your home, and avoid falling down stairs.
Battery Life: Check the battery life to ensure it can cover your home's size on a single charge. Also, consider whether the vacuum has auto-docking and resuming capabilities when the battery is low.
Dustbin Capacity: A larger dustbin means less frequent emptying, which is especially useful for bigger homes or homes with pets.
Smart Features: Some robotic vacuums come with app compatibility, voice control (e.g., through Amazon Alexa or Google Assistant), or even remote control, allowing you to schedule cleanings and monitor its progress.
Customer Reviews: Read reviews from other users to get an idea of real-world performance and reliability.
Warranty and Customer Support: Check the warranty period and the availability of customer support from the manufacturer.
With these criteria in mind, you can start researching and comparing different models from brands like Roomba, Eufy, Roborock, and Neato, as they often offer good options within the sub-$600 range. However, keep in mind that product availability and features may have changed since my last update, so it's a good idea to check the latest reviews and rankings from reputable sources before making a final decision.