Depends what editor they use. Some editors provide specific softcams eg for Technomate, Other provide Softcams for General use.
And can be very different depending on what other satellites/keys included. Some include old keys (in case active on feeds). Others just tested keys, others only keys they have tested themselves. Difference may only be slight. As we always say try them all and use the one that suits your reception area and viewing habbits the best.