There are different types of paper shredders, so the answer for what the best paper shredder is depends on how you want to use it. These are some of the best paper shredders for each type:
Best high-security shredder: Dahle CleanTEC High-Security Shredder 41434
Best office shredder: Dahle Professional Office Shredder 40406
Best small office shredder: Dahle Professional Small Office Shredder 50214
Best personal/home shredder: Dahle PaperSAFE Deskside Shredder 22318