I have only just changed out the old toner and replaced it with the remanufactured toner and so far I see no difference between this product and the Canon toner I normally buy which is why I have rated this product with 5 stars. However the real test will be whether or not they last as long as the Canon toner. I have tried another brand of remanufactured toner in the past with unsatisfactory results (they only last about 30-40 days but sometimes only 25 days). So I guess time will tell
Very happy with my red and black replacement ink cartridges. I was concerned at first if they would fit (246 XL Color and 245 XL Black) into my Canon but so far everything is working out very well !