Hi Musky Hunter. I am assuming that you are comparing the Stainless handled Police model to the Stainless handled Endura?
If so, The stainless Police has a very large (over 4") VG-10 blade. A premium state of the art "exotic" steel.
The stainless Endura has a sub 4" blade made from AUS-6. a good tough, reliable stainless, but will not provide the toughness, corrosion resistance, edge retention and sharpness of the more exotic steel.
VG-10 is not only more expensive to purchase (raw materials) than AUS-6, but it is far more costly to form the steel into a knife blade. The more abrasive resistant VG-10 is more difficult and therefor more expensive to cut, grind, polish drill, sharpen, etc.
The construction of the Police model is actually stronger, though not visible, the materials and labor are of a higher level.
The Police model is a premium piece designed and built for that absolute reliability that a Law Enforncement Professional would appreciate. It's built like his firearm.
The Endura SS is a more affordable stainless model for those that wanted a good stainless model without the higher cost of the Police model.
hope that helps.
sal