Got to be the FEL or the backhoe but it's like trying to choose which child is your favorite. Or which dog. All atachments are good when you need them for the purpose at hand. I don't use my post hole digger maybe once every few years but when I do am sure glad I don't have to dig a hole three ft deep and 12" around in hard clay. On that day, and for that moment, it becomes my favorite.