New to auto steer . Have a magnum 275 with a pro 600. This sping when we first started using it the 262 receiver went out and I didn't take the time to fix it so this fall I replaced it with a 372 unlocked to rtx. We have just used wass this fall for tillage and manure application but plan on getting the rtx subscription next spring for planting. It looks like I have three choices hp. Xp or I think it said gp. Which would be a better choice? I farm in southern Illinois and there are a lot of trees around the fields. Thanks for any help.