My advice when choosing a thermos is to determine what features are important to you (e.g. temperature retention, durability, price) and choose the right thermos. When I was choosing a thermos for hiking, I was faced with a choice between . I decided to try both options and they turned out to be great, but with some differences. The Stanley thermos was durable and easy to use, and had a more affordable price. On the other hand, the Yeti thermos had better temperature retention technology and looked more stylish.