Same company just different styles of bow. Diamond line was purchased by Bowtech. For the most part Bowtech has been Binary cam bows. and Diamond has beenone cam. But 09' has brought change to the lineup, Picked upRoss bows and changed some of the bows in the line that were already in production, and added several new bows to both sides of the line. There areBinary cam Diamonds now.The IceMan is going to be my next bow I belive, I just bought my wife a Justice (Diamond) and my son a 82nd airborne (Bowtech). They make a fine quality line, and customer service is really good.