With the exception of one review by Jeff Medkeff, all of the eyepiece reviews I've seen are strictly subjective. Since we all use different scopes, different eyes, different brains, and have different biases and expectations, reviews say nothing about how an eyepiece will perform for you. They should be read for entertainment purposes only.
At one time I worked in a lab measuring the thresholds of perception and designing and implementing experiments to measure the effects of bias on perception. I am continually amused to see "reviews" in which people, often experienced people, claim to see differences at a level that is far below anyone's physiological abiliity to detect. Don't underestimate the effect of bias. When it comes to subtle differences, people tend to see what they want or expect to see. It's part of being human, how we make it through the day.
See:
http://www.amazon.com/gp/product/071675715X/103-0128207-3443818?v=glance&n=283155
http://tinyurl.com/mhvut
for an interesting overview of why we see what we see and do what we do.
At one time I worked in a lab measuring the thresholds of perception and designing and implementing experiments to measure the effects of bias on perception. I am continually amused to see "reviews" in which people, often experienced people, claim to see differences at a level that is far below anyone's physiological abiliity to detect. Don't underestimate the effect of bias. When it comes to subtle differences, people tend to see what they want or expect to see. It's part of being human, how we make it through the day.
See:
http://www.amazon.com/gp/product/071675715X/103-0128207-3443818?v=glance&n=283155
http://tinyurl.com/mhvut
for an interesting overview of why we see what we see and do what we do.