I am someone who does quite well with a 0.7 mm tip. Always have and it is my preferred tip size. While the 0.7 Acro (hybrid ink) refill is just fine, I did want something that produced a darker line. I found that with the 1.0 tip. While I will always purchase a 0.7 mm refill for most of my pens, this isn't the case with the Acro ink. If you're one that always shied away from bigger tips, I say give this particular ink refill in 1.0 a try. My belief is that you'll love it just as much as I do.
