From what I gather, each feature comes with a cost. What features are worth having for the increase in cost associated? Below is an attempt to classify features, the assumed benefit) and costs along with an example of a representative scope.
Tracking Reliability = $400 (SWFA SS 10x)
+Variable Magnification (Aquire targets faster with FOV) = $700 (SWFA SS 3-15x)
+34mm & Zero Stop & Illumination (Overcome scenarios) = $1100 (Burris XTR ii 3-15x)
+High Density Glass (see target, avoid headaches) = $2000 (Sig Sauer Tango 6 3-18x)
+High Precision Tracking = $2300(Steiner T5xi 3-15x)
+Rugged Durability = $3200 (Steiner M5xi 3-15x)
What features are worth the coin?