Best electric toothbrushes under £50

Top pick: Philips Sonicare 4100 — a proper Sonicare with a pressure sensor and two-minute timer, from a brand whose heads you can buy anywhere. It's the safest long-term buy in this bracket.

Who the others suit:

• Philips Sonicare 3100 — the same family for less; a simple, reliable everyday brush if you don't need the pressure sensor.
• Oral-B Pro 100 3D White — if you prefer Oral-B's small round head and oscillating feel.
• AquaSonic Black Series — the most features here: 40,000 VPM, four weeks per charge, wireless charging.
• Ordo Sonic Edge — a cheap rechargeable with replaceable heads if you want to spend as little as possible.
• Spinbrush Pro Whiten — battery-powered, no charging, good for travel or a spare.

Skip the Ordo Sonic Lite: its ratings are weak.