We started using RTK this spring after having SF1 for a few years and we really thought SF1 was pretty good and we had no complaints with it, but there really is no comparison to RTK. We can plant corn without worry at any time of day and even have been able to use AutoTrac while side dressing with a 13 knife applicator following a 16 row planter very successfully. The accuracy is just incredible! We don’t have to worry about drift which allows us to move around the field and do performance and variable rate trials with our planter which helps us make better management decisions. In addition it makes the row clutches work better than SF1 as well, especially if the field is not all planted the same day.