I recently spent a few days updating The Sweethome's guide to the Best Travel Mug. It didn't take a massive amount of work to refresh it: The site's Editor-in-Chief Jacqui Chen was so thorough in her research for the original iteration of the piece that there honestly wasn't that much work to be done in order to bring the it up to date.
The short version: If you're in the market for a coffee mug that's easy to clean, pleasant to drink out of and can keep liquids hot enough to scald you eight hours after you originally poured it, then the Zojirushi Stainless Steel Mug is the one to get. It's available in three different sizes and a number of colours. Anyone that knows me understands how much coffee and tea I've drank over the years. I've never come across a mug that keeps my brew as hot as the Zojirushi hardware does.
For our full review of the hardware including SCIENCE, head on over to The Sweethome.