All the Smithfield and Hormel butts sold in my area are "enhanced" with phosphates. The grocer where I previously purchased butts sold all natural, then I switched grocers due to price and customer service issues. The new grocer sells Hormel. The first time I used a Hormel butt, my wife raved about the pulled pork. Been using them ever since.
Just smoked a 10 lb Hormel butt last week. I can eat the same thing for days on end, but not my wife......unless it is a Hormel pork butt. About the third night of leftovers she said, "Whatever you're doing with the pulled pork, just keep doing it, because this is perfect." All I did was change to Hormel, but that's our secret.