If you're backpacking, I'd recommend a JetBoil. 2 cups of boiling water in 2 minutes, the device is light, cools down fast, it's really the way to go. I bought one in 2011, and have taken it on every other camping trip I've been on, backpacking or not. Then again, I'm a big coffee drinker, so Starbucks Via packets are nice to have in the backcountry...