Shot placement has a lot to do with it--I shot a whitetail last year with a 3-blade. Complete pass-through, deer went maybe 65 yds, but the blood trail was very sparce. The reason was because I shot high and it bled on the inside.

I use both two and three blade heads--just depends on what mood I'm in and which ones I have sharp. They have both worked well for me, when I do my part.

Chad