Sue, To keep this easy to read, I am going to answer your questions in order: The handles on either do not transfer much heat at all. It's a great material and a great design. We have the non vaiable temp goose neck kettle in our kitchen for use with our Hario and Aeropress, and everyone is very comfortable using it. Unlike stove top kettles, the Bonavita's distribute heat very well, and the water does not flash boil and bubble while it's pouring. We've never had a trace of lime on our kettle here! If you notice any, you could use a product like the Pallo Steamy Wanda to scrub the inside of the goose neck easily. The lid does get hot as a result of steam from the water boiling. The black handle on the lid is made of the same material as the actual handle on the kettle, so it stays cool! My apologies if my answer seems blunt... It's a lot of information to type out without rambling! If you have anymore questions, by all means, let us know!