Thinking of entering the world of GPS Guidance and Auto Steer.  Mainly looking at the EZ Guide 500 and EZ Steer but also thinking about Raven's Cruizer with QuickTrax.  What are the pros and cons of either system?  Which will be cheaper?  Going to be using mainly for Tillage, Spraying, and possibly in combine for bean harvest.  TIA for any opinions.

Adam