The Philips Sonicare ProtectiveClean 4100 edges out the Waterpik Sensonic Professional in overall value, offering a comparable cleaning experience for $30 less and adding BrushSync reminders (CNET, Wirecutter). While Waterpik’s ergonomic handle scores slightly higher on design, its higher price and limited brush‑head ecosystem reduce its appeal for most users (Consumer Reports). For budget‑cons...