1- A SilenX spokesman was caught shilling his product by carrying on a conversation with himself on SPCR's forums, reregistering himself several times after his fraudulent activities were exposed by SPCR staff.
2- SilenX' specifications are notoriously exaggerated, especially where noise is concerned.
Thanks to widespread distribution and aggressive marketing (see point 2.), SilenX fans have a reputation for being quiet — but not on SPCR
3- For a very long time, in part because of point 1., SPCR had never "officially" reviewed a SilenX product.