My first several deer were with Bear Razorheads, some with bleeders, some without. Since then I have used mostly Magnus I's, but also a few Grizzlies and a few with the Zwickey fixed 4 blade.
Like most of you guys, I also helped friends on as many or more blood trails than I have created myself. I can't even begin to list the broadheads used on those assisted trails..Woodsmans, Razorcaps, and SteelForce come to mind.
After all those bloodtrails (I'm NOT the most experienced guy on this site,I don't mean that to sound as salty as it reads), I think it's all about shot placement. Low through both lungs, possibly disrupting the arteries on top of the heart, seem to cause massive bloodtrails, regardless of the head. Ironically, those deer also usually drop within sight.
Therefore, I shoot the widest broadhead, that I can sharpen the best, that flies the best out of the bow I am using.