First smart command compatible for my Pixma MP640 canon. in 3 different suppliers via Amazon "to see." In fact all these compatible that I have ordered are of the same origin and the same packaging. I have meanwhile changed a cartridge of the mark by one: results identical to the original that is very good. As each vendor delivers the same product, the only selection criterion remains the home delivered price although price differences are not huge. So can most litigious choose the cheapest at the time of order. When mine c 'was clearly FreeINK Shop which further competitive prices delivered a black cartridge and more. But beware, this can of course change over time. I'm happy with my choice down here, the product is correct and reliable suppliers with varying but reasonable deadlines for delivery.
