Currently have a Raven Envisio Plus in a tractor for guidance and want to add auto steer.  It seems to make sense to stick with Raven for the auto steer, but I don't know much about the smartrac and quictrac.  My question is there other systems that would work with the Envisio that would be a better deal?  I was quoted $5600 to add the smartrac and quictrac to our current setup, does that sound reasonable?  Any input on the Raven smartrac and quictrac would be appreciated.  This tractor is mainly used for spraying and pulling 30ft no till drills, with the occasional planter in which we may need to upgrade to Omni HP instead of the WAAS.

TIA,

Johnson