Difference between Straight Wire Crescendo I vs II

iani it seems like Straightwire is one of those companies that just never gets reviewed. I've never heard the Crescendos but listening to a pair of Symphony IIs a friend loaned me and they sound excellent.

jond - Yes, it's a solid brand that push less on the marketing department respect to other american brands; I know very well the Maestro I and II speaker cables, the Black Thunder II power cable and the Crescendo I (interconnect and speaker cable). But it's difficult to find comparisons of the Crescendo I vs II vs III - for me the Crescendo I is a very very balanced cable; sometimes new model does not equate to better cable, different yes, but not better. I would like to understand better this aspect.