Yeah, their EF is too juicy to lay down a fine line! For budget friendly true needle-like precision, I’ve enjoyed my dumpster Kakuno EF 😅 (side-by-side with a TWSBI F for context)
Thanks for the recs! Btw - they do make EF kakunos that are super duper fine (& scratchy). I found one new in its box (near the Jinhao shark) in a dumpster recently (a hardcore pen nerd mid-moveout dumped two cheap ones and a bunch of ink samples/a nice case). It’s my go-to for detailed marginalia!