Some things that pop into mind right initially...

•  Assisted steering
• EZ-Guide 500
• Steering interface
• EZ-Steer
• Positioning options
• WAAS, OmniSTAR XP, OmniSTAR HP, or RTK
• Envizio PRO (Raven branded, Internal GPS receiver)
• Steering interface 
• SmartSteer
• Positioning options 
• WAAS
• Envizio PRO (Raven branded, External GPS source)
• Steering interface 
• SmartSteer
• Positioning options 
• WAAS, OmniSTAR XP, OmniSTAR HP
• Envizio PRO (AutoFarm branded, External GPS source)
• Steering interface
• OnTrac 2
• Positioning options
• WAAS, OmniSTAR XP, OmniSTAR HP, RTK
• Product control
• EZ-Guide 500
• 1 channel/product
• Envizio PRO
• 2 channels/products
• Variable rate
• EZ-Guide 500
• 1 channel VRT
• Envizio PRO
• 1 channel VRT
• Screen type
• EZ-Guide 500
• Buttons
• Envizo PRO
• Touchscreen
• Automatic spray boom leveling
• EZ-Guide 500
• Not available.
• Envizio PRO
• AutoBoom