There are some items where buying the real thing is better e.g. spare batteries for my Canon cameras when compatibles just don't last.
So I tried this laser toner cartridge because it was so cheap compared to the real HP one. I was quite prepared to be disappointed.
Not so. The cartridge works well. Just plug it in and go, no adjustments necessary.
After nearly a year of use, there was some black marks on the printed pages. I took out the cartridge, gave it a few turns to distribute the toner and have not looked back.
When the cartridge eventually runs out I have already got a replacement waiting, waiting, waiting ...