Re your experiece with cables, it looks to me that although not at first, but you eventually found that the tara labs worked better for your existing system. For your new Solos, you may also need to try different brands to find out what works.
I think getting the Linn's Silver is still a good idea, after all, it was designed by Linn for use on its gears, it should be a better match with Linn amps than most others. My suggestion is to use the Silver as a starting point with the Solos, and then you can try other cables in the future to see if they work any better.
By the way, you may check into if your Solos come with Silver interconnects.
I think getting the Linn's Silver is still a good idea, after all, it was designed by Linn for use on its gears, it should be a better match with Linn amps than most others. My suggestion is to use the Silver as a starting point with the Solos, and then you can try other cables in the future to see if they work any better.
By the way, you may check into if your Solos come with Silver interconnects.