RE: Can we get a consensus....."Mature Bucks"?
Granted, there are some 3.5yo that will have bigger racks and body size than some 4.5yo but IMO, there is SIGNIFICANT difference in a 4.5yo vs 3.5yo in the "woods savvy" of the two.
I suspect there are more 4.5+yo old deer in all regions than we realize, we just don't see them very often because of this.