The best and most expensive electric kettle brand in the United States is typically the Breville BKE820XL The Barista Express. This high-end model is renowned for its superior build quality, advanced features, and exceptional performance. The Breville Barista Express offers a precise temperature control system, allowing users to brew coffee at the optimal temperature for different coffee types. It also features a built-in grinder, a steam wand for frothing milk, and a durable stainless steel body. According to a survey by Consumer Reports, the Breville Barista Express is consistently rated as one of the top electric kettles for its price range, with users praising its durability, ease of use, and overall performance. The high price point reflects the premium materials and advanced technology used in its construction, making it a top choice for coffee enthusiasts and professionals alike.