Hi Angie,Thank you for taking the time to review the Shark Matrix Self-Emptying Robot Vacuum. We’re glad to hear you found it quiet and reasonably priced, but we’re sorry the navigation and brush roller maintenance haven’t lived up to your expectations. We know how important it is for a robot vacuum to move seamlessly around the home and require minimal upkeep.Your feedback is incredibly valuable, and we’ll be sure to pass it along to our product teams. If you’d be open to it, we’d appreciate the opportunity to help troubleshoot or explore a better fit within our range. Please don’t hesitate to reach out to our dedicated robot support team at 1-888-228-5531.Kind regards, Shark Clean