I have to say these are the best pens i've ever used. I will most likely never
go back to pencils again. The bold and smooth uninterrupted writing of this gel
ink is superior to anything else i've written with. Also note these are for the
Pilot Frixion Point pens. http://pilotpen.us/brands/frixion/
Not 5 stars for 2 reasons:
1) they run out of ink quite fast. I'm a PhD student in Engineering and while I
do go through a lot of notebook paper to solve my HW and during research I've
gone through about 3 refills already since the start of this semester (Aug 30th
- Oct 16th (time of this review)) . So about one refill every two weeks.
2) Because at the time of this review Pilot's main webpage did not have refills
of the extra fine 0.5 mm I had to purchase it through JetPens. They also made
it very difficult to verify i'm getting what Pilot refers to as the "Frixion
Point". I had to verify via email webform that these were the correct refills
which made me very uneasy.
So make sure you buy in bulk and get that free shipping. They are definitely
worth the price and refills.