I haven't used anything but Staples' paper for the past 10 years and do not remember ever having had one paper jam - ever. Quite remarkable when this - jamming - is the most frequent complaint I hear from all my friends/collegues.
This paper has been reliable for years. I never had a paper jam with it while I had two one for each of the two reams I bought of the Hammermill "99.96% jam-free" paper. A paper jam requires disassembly of my Brother Printer so I will always prefer Staples paper to Hammermill.