We have 2 JD 535s one with twine we bought new and a used one with net we bought several years ago to bale some hay to sell. We really prefer the net wrap and have not used the twine baler in2 years. They are a good dependable baler . I kinda figure   I will wear out the net baler than put the wrap package on the twine baler probally will never have to buy another baler. They basically have no electronics only weak point they have a lighter pickup than the newer JDs. We use JD netwrap and it works fine but we keep our balers shedded and clean.