Some of the cables above offered more than the Morrow, but when cost was factored in, Morrow was best all around for the money. I have not looked into Acoustic Zen. Just looked at The Cable Company and they carry AZ may rent and give them a try.
No, don’t do that. If you wanna try them buy the used ones I recommended because if they don’t work out you can sell them for about what you paid for them so very little risk. It’s almost like a free in-home trial, and they may well address the issues you’re trying to address, and if they do your problem is solved for $650.