You can't compare them, really. You can compare the CF and the Igniter but they're both millions years ahead of Sabercore sound. Much better sound quality, tons more features, SaberCore have quite a high failure rate ... CF and Igniter don't. CF has an on-board current regulator for the main led... You should read manuals of both soundboards, they're very instructives and well written.;)
PS : if you just want a basic soundboard, just go with a Nano Biscotte or Spark 2. About the same price as the SaberCore but still far ahead...