Dueland

It´s Duelund, no Dueland.

Are you saying one cable will be 5 feet long and the other 13 feet?  I don't have the science behind this, but I'd think it'd have to introduce differences in resistance and other things as well.  I wouldn't do this if this is what you're thinking, but maybe some smarter people like @almarg or someone can educate us more on this. 

Jesus, you are right! " It' s (It's)  Duelund no(t) Dueland." 

Soix:  As with all things cable related there doesn't seem to be anything like  complete agreement on whether using two lengths of cable is detrimental to the sound.  I really want to avoid having a big coil of speaker cable behind my rack which also might not be desirable soundwise.  I am using Kimber 8tc now with different lengths and don't hear any bad effects but, of course, I didn't compare them with anything.I would be interested in hearing Almarg's opinion which is always well informed.

No problem with different lenghts. Zero issues.  I have a 10 and 20 foot lenght and my sound is glorious! Plenty of folks have differing   lengths and the sound is exactly the same as equal lengths. I have made many unequal sets for folks. 

Grannyring:  Thanks for your advice.  I no longer feel any hesitation in purchasing them.