The other thing to compare would the brightness of objects say between similar focal length ep's (i.e. 21 Stratus and 19 Pan, 13 Stratus and 13 Nagler, etc.) to see how "deep" the ep's can go. Also check to see how "neutral" the colors are in comparison to the TV's on planetary and luna (I know my Radian did not fare too well in that department against a similar focal length X-Cel ED2). Am I being to picky
Darren
p/s: I have a used KK 20mm Widescan III coming (courtesy of Astromart) and I will compare that to my 20mm Orion Expanse and give a report when I can