Top 15 Business Benefits of upgrading SAP R/3 4.7 to ECC6.0

Organization i am working with is presently using SAP R/3 4.7 and has separate servers for new dimentional products like CRM, SRM, BW etc. Considering this scenario what are the top 15 benefits my organization can enjoy in case we decide to upgrade from SAP 4.7 to ECC6.0