This is the 2nd one I am using. The first one produced the expected and more (okay, it depends on several things for the more). The previous one had a slight gray shadow at the edge of the page from the beginning. The 2nd one prints perfectly.

Compatible with HP P1102w, no problem until the last page. It is the 2nd time I buy it.

No difference from the originals. As for the pages... I don't have a consistent coverage percentage, so I can't calculate. Definitely worth it.

Well, because it is compatible with 3-4 different models, it took me a while to install it correctly, yes you read that right. The first and second time it chewed up the paper. With the third time, everything was okay and it has been a month since I have it. It is worth the 6.5 + shipping and it is overpriced compared to the 80 that HP wants. As for the volume, I will let you know in... about a year

It has the problems of the non-genuine ones, but the quality-price ratio is definitely worth giving up half of your fortune to get the genuine one. I didn't notice any strong smell.

No compatibility issues, nice prints, I printed a large volume and it still has more to offer.
But... it smells strongly. I always open the window next to it to ventilate. I am concerned about the safety of the chemicals it contains.