I had always used 3M tape in the past but tried Staples Invisible Tape Refills a few years ago as the price was extremely competitive. I was on an expense account but curious and so I went with Staples' brand and have never looked back. I saw a previous reviewer said the 3M equivalent was stronger and they expected that but I have had no problems with rips or tears that were repaired by this tape becoming undone. Staples runs sales on this line from time to time and I stock up when they do as I know I will always need tape refills.