I used the .5 frixion in my organizer before I ordered this one. I really like
the finer line, and love being able to erase appointments when they change. The
problem I have is that this pen starts out fine - then starts to skip and I
can't get it going again. As much as I like the finer tip - I will be going
back to the .5. I get really irritated when my pen won't function.