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I got this pen a few months ago because of how discrete it was. My 500mg tanks usually lasted me well over 100 hits (though my hits are probably much smaller than yours ><). However, 16 full hits out of 250mg doesn't seem right at all.
Thanks for the information! I think I'm going to pick this pen up sometime soon. Have you tried the Omicron cartridges yet? I was about to get that pen but then I was kinda bothered by how they're loaded.
Would you guys recommend this pen over the Atmos or Gentleman's for concentrates? How do they compare? I've been shopping around for a while now and still don't know which concentrate pen to buy >_<