Bosch Sky TWK7203GB

The Bosch Sky is the refined choice. Its double-walled stainless-steel housing keeps the outer surface cool to the touch and, per Bosch, helps water stay hot for longer, so you reboil less. A touch display offers seven temperature settings (70°C, 75°C, 80°C, 85°C, 90°C, 95°C and 100°C) with a keep-warm hold of up to 30 minutes, and the 3kW element and 1.7L capacity keep pace with any rival. It sits below the Ninja because it costs more at an indicative £85 and starts at 70°C rather than 40°C, giving it a narrower low-temperature range — but it wins on insulation, safety and finish, and reviewers including Which? rate its build and everyday performance highly. Choose it over the Ninja if a cool-touch body and heat retention matter more to you than the widest temperature range and lowest price.