My vote would go to the headblade, in part because I’m just really used to it at this point.
I mostly use a DE, but I use the headblade for a polishing pass. I find easier to run it over my head than a handled razor for that pass.
I suppose the advantage of the headblade to be the design. I like that I can drag it in the palm of my hand over my head. So, echoing what others have said, I feel I have little more control
Though with the Fusion, I think the advantage is that it is easier to maneuver in problem areas … like behind my ears. As far as disposables go, I personally didn’t care for them (like the Gillette Good News). Perhaps it may have been my choice of disposable razor, but I found them to be a bit rigid and I tend to nick myself (particularly behind the ears) more often than with a Mach 3 or Fusion.