I have no clue, I’m more utilitarian than fancy. I’ve tried fountain pens but found them to be too high maintenance. If it means anything, my second favorite pen is probably a G2.
The f701 is 8 bucks, a space pen refill is another 9 dollars or so.
So for 20 bucks you have a stainless steel pen that will last forever, while writing in damn near all conditions. Looks snazzy enough to trigger the “I better not leave this” for me, too.
Thank you kindly!