Personal preference, as you said. I've never been able to find fatwood locally- how many fires would you be able to start with a piece half the size of a USGI mag block?

I carry my mag block to use when I've got the time, in much the same way I might carry a fire piston or a fire bow.
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-IronRaven

When a man dare not speak without malice for fear of giving insult, that is when truth starts to die. Truth is the truest freedom.