My restaurant currently uses 85/15 burger for everything. Our specialty burgers use machine pressed[currently a triple patty with american cheese, lettuce, and tomato and house sauce with french fries for five dollars] and our menu burgers use hand pressed patties and the difference is hard to believe. They cook up different and have a much better taste and texture than the machine pressed patties. This leads me to think that handling may make more difference than the time gone by or the amount of grease.
Bruce… I never eat pressed burgers. I am with you. ONLY HAND MADE BURGERS are tasty and juicy. You need those nooks and crannies for flavor and juice.