Eco Kettles come in different forms and some models will work better for you than others. It depends on what your habits are and what you drink. Tea only drinkers who don't like refilling kettles all the time - Eco Kettle 2 (Basic Version) Tea, coffee and herbal drinkers - Eco Kettle 3 (This gives you control over the final temperature of the water and hence really can save you ££) If you just drink tea and do just boil what you need - a conventional kettle is just fine!