Personally I "feel" prop sooner. But that's just because it raises your levels faster. Prop you become a pin cushion. Cyp = less pins and more steady climb and fall off of test levels.
Use the prop stacked with cyp the first 3-4 weeks of a cyp cycle and you will get faster results.
Also the proprionate ester is shorter which we all know but what that means is it also takes up less room per ml. So in essence wen you pin 250 mg of test cyp at 1 ml you are not really getting 250mg because the ester takes up so much room. with the prop ester you get more actual test per mg. even though its only 100 per mg you would get more actual test in the long run. If that makes sense.
But like Ray said were not really going to change the fate of humanity debating each one. Each one has its place you just have to know how to use it.