Across 657 products in 19 categories, Reddit owners bring up reliability and support in 13% of their opinions, YouTube reviewers in 7%. On apps, 71% of owner opinions are negative. Data to download. Across these 14 categories: 7.8% of reviewer opinions vs 17.0% of owner opinions. Owners bring it up more in 13 of the 14; tennis ball machines are the exception, with only 91 owner opinions.