The Spark Lite is great because it can be used one handed and as long as you are useing tinder you brought it is probibly one of the best fire starters. The ferrocium rods on the other hand are great for these reasons:
1. It works fine after its been submerged in water, even with minimum drying.
2. Larger ones can be broken with a rock into two pieces in case you need to give one to a partner.
3. They throw more sparks which makes it easier for damp or not the best natural tinders to start.
4. They last a long long time.