This ink definitely doesn't dry as fast as the authentic PB cartridge ink so it's not good if you do a lot of mass mailing. You need to let them dry for about 10-15 seconds before you stack or it smears. The impression is definitely lighter but still easily legible. I ran out of the authentic in the middle of a project and switched to this brand - it made the rest of the project take a lot longer. having to wait on the ink to dry so it wouldn't smear. Overall it's not bad. 2 of these cost less than 1 authentic cartridge so depending on your usage this could definitely be a good option.
This was a good choice for the Mailstation 2 postage meter from Pitney Bowes. The cartridge was a flawless replacement and the price on the cartridge couldn't be beat