I've been reading this thread and just wanted to say that breaking-in cables first to me sounded like just another way for people to sell bad, or more cables.
By now I know that when you have put a lot of time and money in selecting the components that sound "right" for your ears...finding the right cables is even more difficult. [and expensive].
I'll never forget what my first Siltech cable did for my install. I just could not believe I had been listening and enjoying music with my old cable after swapping back once. At this point I started to buy [and after breaking-in and listening, selling again] the best interconnects I could afford. Some were simply a vast improvement, others a waste of money.
In the end I only bought cables that I could try out at home first, and that worked for me.
Regrettably I'm a looong way from you guys, not beeing able to audition the Decware cables and having to pay customs and substancial shippingcosts for everything I buy in the U.S.
The speakercables I use are 100% pure "silver strips" [Siltech FT12, fragile...] which are about 15 years old; prob. my best buy EVER. I relined them with teflontape and finished them with braided nylon and shrink-sleeve; looking very nice and letting music through like I never heard before.
About interconnects; I once hooked up a new interconnect which sounded awefull ,to a fully charged car battery on one end and a headlight-bulb on the other and left it burning overnight. Repeated it 2 more times, each time after which the cable sounded better balanced, no more harsh highs after three times.
I've done this with a lot of cables now and it's a zero-cost upgrade for impatient people like me, who just want to flip the switch, sit down and enjoy music. I hate it to come home, knowing I'll have to listen to stuff still breaking-in...
Silver btw is a far better material to use for audio than silver-plated copper imo; when silver ages it produces silver-oxide, which is a excellent conductor. Copper on the other hand degrades over time because of the air molecules trapped inside during the fabrication process ; copper oxide is a BAD conductor.... [no such problems when using UPOCC wire].
Everybody can tell you "their cable is superior made" but nobody can tell you it will match in your install.

. Your taste and your ears are unique!
Just my 2cts.
Nico