How much should I spend on an electric toothbrush?

High-trust reviewers repeatedly point out that entry-level models like the Oral-B Pro 1000 and Philips Sonicare 4100 deliver essentially the same cleaning as premium units—the extra money buys modes, displays, app connectivity and travel cases rather than meaningfully cleaner teeth. Most reviewers suggest spending $40–$80 unless you specifically want smart features.