The Shark Matrix Plus 2-in-1 is positioned as the best robot vacuum under $350

That’s an interesting price point — aggressive enough to undercut Roborock and Roomda’s mid-range, but high enough to avoid the bargain-bin quality issues. Shark’s Matrix line uses a unique cleaning head design with dual rollers and what they call “Matrix Clean” navigation (pattern-based rather than random bounce). For $350, you’re getting a vac-mop combo with self-cleaning brush roll and decent navigation. It’s a strong contender if your budget caps out before the $400+ models come into view.