I have been buying the higher-priced Avery products for fear that the Staples brand would not deliver the same high level of quality. My fears were unfounded and I can't tell the difference between the two - except for the amazing cost savings.
These worked great on my laser printer. I printed in color and black and white and both looked good on the paper. I was worried that the paper would be too thin for the mail but they are pretty sturdy. Good buy.