In Search of the Perfect Travel Mug

I would say as long as the inside is stainless steel, that's the most important thing. Not only does it keep your coffee hot, but the plastic inside of regular plastics cups melts a little and gives you that plastic taste in your mouth. Not good for you either.

STARBUCKS! I've had mine for over 10 years (maybe even 15) and am still amazed at how long it keeps my coffee hot and then even at a drinkable temp (I don't like cold coffee) I LOVE LOVE LOVE it!

I LOVE the Nissan 18-Ounce Stainless-Steel Insulated Travel Tumbler. It looks like this: http://www.amazon.com/gp/product/B###-###-####WN/ref=pd_l...

I have 6 of them. I know, I've invested a small fortune in coffee mugs!! Had them 6-7 years and yes, I put them in the dishwasher. Never had any problems with them (they are very durable!). If you accidentally drop it, it might dent the metal but it never cracks; and unlike the plastic kind, water never condenses on the inside. Only tip I have is, if I wear certain lipsticks and throw the lid in the dishwasher before wiping the lipstick off, the lipstick will stain the plastic. But as for the mug, the coffee always stays hot! The snap lid does a good job of limiting the amount of spills (although its not "spill proof"). And its the right size for car cupholders.

I just got one from starbucks that is great! Pricy but they know what they are doing. The employees even demonstrated it for me.
Good luck!