Raspy, flint was the very reason I went to electronic lighters.  I have had, over the years, several flint lighters where the flint degraded so badly that it actually turned to powder.  I guess there are good and bad in all butanes.  Just a matter of finding the right combination.  But, based on all past experiences, from now on I am going with  electronic Crickets. I have not had one to fail yet.  Only thing I don't like about Crickets is that some of them do not have a flame adjustment lever on them.     
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"The more I carry, the less I need."