The Staples Opti-Flow just glides across the page, leaving a thick, amazingly consistent line in its trail. I have never been able to write so fast with one pen in my life! It's so fast, I blame the pen for my multiple misspellings, as well as forgetting to actually complete the highlighter test (again). The only issue I see with this pen is that if you are writing on any type of porous paper, the ink is going to bleed pretty seriously. This pen seems perfect for letter writing with big, loopy script, as opposed to finer detail writing like I am used to, but it is a really nice pen.
Thanks for sending it Kata!