XHSO-FM is a radio station on 99.9 FM in León, Guanajuato, Mexico.
The station is owned by MVS Radio and carries its La Mejor Regional Mexican format.
It signed on broadcasting Stereorey, a contemporary music format in English.
On September 2, 2002, the Stereorey format ended to give way to Best FM; on March 5, 2005, it became La Mejor with grupera music.
This article about a radio station in Guanajuato is a stub.