I just purchased a Magnum 245 with auto steer.  I want to upgrade from WAAS to either Omnistar HP or Intuicom RTK for planting.  HP would cost a some less than the RTK but am concerned as I was told it can take up to 30-40 minutes for HP to get to 2-4" accuracy at both start up and if I should lose the signal next to a grove, etc.  What are your experiences with this?  Opinions on either system would be welcome. 

Thanks