I have the x580 and love it. Strong little garden tractor. If it were myself, and I was considering the x570, I would make it the x580. Now, I know people like to spend other peopleís money but I truly feel this jump up is a good one. You get the Hdap rear tires. This is big if you plan on pulling a wagon for yard work or anything else. Great improvement in traction. You also get power steering, which is the greatest thing since sliced bread on a lawn tractor. You also get hydraulic deck lift. Now, I canít remember, but I would check on the transaxle serviceability. You can change the filter and oil on the 580, but Iím not sure about the 570. I know one has a K72A and one has a K72B, and I canít remember what the differences are.