I used the magnus stingers last year with good sucess , nither the slicktrick or the muzzy are "cut on contact" heads , 2 blade heads work great allso and I personaly have had no tuneing issues with them , thru years of use . Your other cut on contact choices are , ziwicky , phantom by muzzy and steelfource , and some others Im sure Im missing . IMO lineing up blades with fletching is useless .