Well I wish I could offer a review, but I don't think I'm qualified to since I've never heard more expensive speaker cables, and I've never heard similarly priced cables. I have no reference, so I can't quite pick apart the Tara's inherent tonal quality. The best I can offer is the improvements I got from generic cables.
1. The bass. As a test CD, I used the last two songs on the Crouching Tiger, Hidden Dragon soundtrack sung by Coco Lee, which have some low hitting drum notes towards the end of the song. Before the Taras, those bass notes literally were not there. They just disappeared into thin air...I couldn't even hear them. At first I thought maybe bookshelfs just couldn't handle bass that low, but after getting the Taras, those drum hits became audible. So I know for certain from this test that the Taras do audibly improve, or increase, bass. This became more evident as the Taras burned in.
2. The imaging...it just snapped into place, and I could hear things more precisely in the given soundstage. With the generic RS cables, things were like mush within the soundstage, and it was hard to pick things out.
3. Depth...before the Tituses I had never really experienced depth. It had depth to begin with, but with the Taras, I could hear even more further back into a soundstage. There was more front to back than ever before.
4. Details...the Tituses by themselves are excellent at producing small details at low listening levels, the primary reason why I chose to go with them, not even considering they're Class B or whatever. The Taras simply improve on this trait. When I game, I pretty much use speakers only, and I game at low volumes...never wall shaking levels. After I got the Tituses, I discovered that there were a LOT of minute details to both the game soundtracks and sound effects that I had never heard before...details I had only previously heard on headphones.
5. I don't think they did anything to the treble, or to the midrange. I don't think I can characterize the cables themselves as anything either because of how tonally different my amp and speakers themselves sound. My amp totally, noticeably sounds warm, and for the Tituses, I've heard them being called anywhere from bright and detailed to warm and smooth. Part of me when I bought them was hoping for the "bright and detailed" characteristic, but I ended up getting the "warm and smooth" characteristic. Given that, I have no idea what to call the Tituses.
That's about all I can say on the Taras. I'm not the type to enjoy tweaking around with cables as I think they by far offer the lowest bang for the buck and have the highest diminishing returns, so I tend to just get a good decent cable and settle in with it. I am for now very happy with the Taras though.