Comparison of Combines

I will be comparing three different combines, all of about the same size and power.  The first one will be a John Deere 9870 STS combine.  The second one will be a Case IH Axial-Flow 9120 combine.  The third one will be a New Holland cr9070.  The John Deere homepage is http://www.deere.com/en_US/ag/index.html , where you can find additional information about this combine.  The Case IH homepage is http://www.caseih.com/northamerica/Pages/Home.aspx ,where you can also find additional information about the Case IH combine, and the New Holland homepage is http://agriculture.newholland.com/us/en/Pages/homepage.aspx , where you can again find more information on this combine.