Magnesium fire starters are a must in any survival kit and are very easy to use. The greatest benefits to having one is that they can be used over and over again. Magnesium fire starters do burn for a short period of time, but they burn at very high temperatures.
The typical magnesium fire starter are also very affordable.
There is also a change in quality. Having soft magnesium means its more pure and it will work better.