Anyone compared Morrow Audio Interconnect cables with Audio Envy Prestige interconnects?

@tom6897  Do you know how much of a difference there is between the level 3 and level 4 speaker cables? My budget is a little tight. Also, do you have the newer cables without the silver coated copper?

I have Morrow bi-wire SP7's and just inquired about the A.E. SP9's. I don't see that offer them in bi-wire. I would sure be interested in a comparison of the two if anyone else has tried both.