Having a few different rollerball pens, I've been trying to find the refill that is best for me. I've had some success, but not as much as having found the ballpoint refills (Schmidt EasyFlow 9000 and Parker QuinkFlow) I think are the best.

I purchased this to replace a Waterman cartridge that was a let down. Upon beginning to use this Parker Quink Ink roller ball, a few things became clear:
--the ink itself is reasonably durable
--it is not exceptionally smooth-writing...it's smooth, but not at a notable level
--it sometimes skips when writing...especially on thicker paper like the Post It Super Sticky Notes
--It can bleed through a standard page pretty quickly...and thinner pages like crazy
--fast writing can have that 'scratchy' feeling that makes you want to shiver when it happens, like nails on a chalk board
--using these exclusively would cost significantly more than many other refill options (*cost is why I gave this two instead of three stars, as it makes it a less practical option)

Now with that said, many rollerballs have the above issues. This is hardly unique to this model. For example, Schmidt Ceramic rollerballs are very smooth, but bleed through paper like there is no tomorrow.

Additionally, rollerballs don't seem to last very long, and so the higher prices of fancy rollerball refills quickly add up. That leads me to the primary reason I will not buy this again...compared to a $1.25 G2 refill modified slightly to fit the pen, is this Parker better? I don't think so...personally, I think the G2 does better in many areas.

Years ago, there weren't all that many great-writing pens that were dirt cheap...but today there are numerous. So if a maker wants to sell their own brand refills at a premium pricing, they must design a product that gives premium performance that makes gains over the less expensive and more available lower-priced items. Does the Parker QuinkInk rollerballs do this given they are priced around 3-4 times the price of the G2? I personally do not think they do, and hence purchasing these are hard to justify, in my personal opinion.
Having a few different rollerball pens, I've been trying to find the refill that is best for me. I've had some success, but not as much as having found the ballpoint refills (Schmidt EasyFlow 9000 and Parker QuinkFlow) I think are the best. I purchased this to replace a Waterman cartridge that was a let down. Upon beginning to use this Parker Quink Ink roller ball, a few things became clear:
--the ink itself is reasonably durable
--it is not exceptionally smooth-writing... it's smooth, but not at a notable level
--it sometimes skips when writing... especially on thicker paper like the Post It Super Sticky Notes
--It can bleed through a standard page pretty quickly... and thinner pages like crazy
--fast writing can have that 'scratchy' feeling that makes you want to shiver when it happens, like nails on a chalk board
--using these exclusively would cost significantly more than many other refill options (*cost is why I gave this two instead of three stars, as it makes it a less practical option)

Now with that said, many rollerballs have the above issues. This is hardly unique to this model. For example, Schmidt Ceramic rollerballs are very smooth, but bleed through paper like there is no tomorrow. Additionally, rollerballs don't seem to last very long, and so the higher prices of fancy rollerball refills quickly add up. That leads me to the primary reason I will not buy this again... compared to a $1. 25 G2 refill modified slightly to fit the pen, is this Parker better? I don't think so... personally, I think the G2 does better in many areas. Years ago, there weren't all that many great-writing pens that were dirt cheap... but today there are numerous. So if a maker wants to sell their own brand refills at a premium pricing, they must design a product that gives premium performance that makes gains over the less expensive and more available lower-priced items. Does the Parker QuinkInk rollerballs do this given they are priced around 3-4 times the price of the G2? I personally do not think they do, and hence purchasing these are hard to justify, in my personal opinion.