The Staples One-Touch 3 Hole Punch is the perfect combination of hand comfort effective / sharp cutting posts and cutting volume. We print and punch hundreds of pages weekly and find this punch easy on the hands and accurate to use. Typically we punch 20 - 30 pages at a time and it take little effort. The only caveat is the handle slide lock mechanism is plastic and when it fails it is difficult to unlock the punch. I would rate the life span to be 100 to 150K pages. For the price and quality you can't go wrong.
The unit punches holes appropriately but I was concerned about the door that is opened to remove the hole punches. It is made out of formed plastic and looks subject to failure if used frequently. Also the unit states that the waste emptying is quick and easy but I had to shake it in many directions over a large trash can. I can't see this product existing in an office environment very long. Of note the punch from the left margin is at least 1/4" off from my previous hole puncher.
We finally got organized to put all our important papers - and duplicate copies - in two large loose leaf binders. It was such a pleasure to be able to punch out 30 sheets at once with a well built piece of equipment that didn't require bodybuilding as a prerequisite.
I have several of these two for work and two for my home office. I love them. They glide though the sheets with little force. The holes are perfect. The unit is also compact. It secures tightly and is easily carried in a roomy briefcase.