Those are what I consider back-ups. Primary fire starters are bic lighters (mini-bic if space is limited) which I think are amazingly reliable, Zippos (if regularly topped off) or sturdy matches in a good match case. REI Storm Proof matches are good, and K & M makes superb match safes.

I consider Spark-Lite the best of the back-ups. All back-up or sparking fire starters are infinitely easier to use if you carry some sort of prepared tinder with them. Spark-Lites include good tinder in the kit.