In the red river valley most use variable rate for ferts and seeding, auto steer, precision planter/seeder tech., wider suspension boom sprayers (get rid of extra tire tracks), and everything else. Crop prices have dropped a lot here so payback's are elongated for those adapting late. I'd be more concerned about your roi on the farm as opposed to trying to keep up with the jones's. Every farm is different too. Best investment for me has been GPS, looking for other things to add as well. I'm a small weekend farmer, so can't buy everything while keeping a tolerable risk level.