3 speaker cable options - what to choose?


Hi guys,
First of all, I new here, it's my first post, nice to meet you all.
Now to business:
I am looking to upgrade my current speaker cables (VDH cs-122)to something much better.
I have narrowed down my choices to 3 options:
1. Audio Art sc-5(se)
2. Morrow Audio sp-5
3. Clear Day Shotgun
My budget is $250-$350 and all three fall within this price range (either new or used), the ClearDay is a bit cheaper than the other 2, but the double shotgun version is out of my price range.
My speakers are 88db, 8ohms yet quite power hungry.

Which option will give me the best sound?
Any advice, especially from someone who's had a chance to here more than one of them, would be highly appreciated.

Thanks
behemot
I forgot to mention that I live outside the USA so there is no option for me to audition any of the cables, this will have to be a blind buy - hence the experience sharing request.
My speakers are Aurum Cantus Volla powered by a Tag Mclaren power amplifier (the amplification would probably upgraded within a year or so to a hybrid integrated solution or a tube pre-amp with a SS high current power).
Currently I want more details and air between the instruments, and that the sound would be more "alive".
I own both the Morrow SP-6 and the Clear Day Shotgun. I like the Clear Day better. It is all soft silver as compared to the Morrow which is copper and then silver coated.
But, you should spring for the double shotgun and you will avoid the upgrade itus.
Wait until you upgrade the amp FIRST, then do your cable selection.

System synergy matters
I've owned all 3 , Morrow is all about Air and detail, SC5-E
is solid from top to bottom but less "airy' .
Clear Day Shotgun is not a choice for speakers as inefficent as yours, need Double for that.

If you listen to mostly acoustic music, I'd get the Morrows.
For Rock I'd get the SC-_5
But any reasonable person should be happy with either.
Is the double shotgun worth the extra cost or should I stick with one of the other two?
I don't want to compromise and regret later on...