Price: £49.99 (plus £4.99 p&p) Sensors/alert: Four/audible

There are 12 shades so you can match your bumpers, and the maroon finish of our test samples was thick and lustrous. As they are permanent-fit, linking the wires to the sensors was a bit fiddly, but not hard, and the instructions were clear. Performance was excellent, even with the low-lying hose, and a keen price clinched the win