Which entertainment company is better in South Korea?

Ok i am signing up for the sm auditions in sf but i heard sm ent. is horrible from the rumors of battered artist and they kkep so much of the money you make, theres JYP the WONDERIGRLS ent. company , then theres , YG for BIG BANG and GUMMY , YIGA ENT, GOOD ENT, and i heard the best so far is MNET ENT. home of LEE HYORI , SS501, (i think im not sure the new duo) DAVICHI there r more but the list goes on plz help me decide