I was so glad to find a "store brand" of labels. I had previously used another well known brand of office product. They changed the edge of the labels and it no longer feeds into my printer in a satisfactory way. When I sent a review to the other maker I said from now on I would continue to use a "store brand" product as I had in the past and didn't have an issue.
The Staples labels stick as well as Avery's but they are harder to peel off. When you are in a rush or doing a large mailing this can make a difference.
I use this size for small mailings addressed with MS word mail merge. I print a whole sheet of our address and use it for return address labels. I print a whole sheet of our address and use it for making quick return envelopes to send with bills(I don't have preprinted return envelopes).