Synergistic Research cords are known for neutrality,
so just pick some within your budget and try them. I've tried them all myself but I favored their most expensive, which is perhaps not where you're looking to start out.
Sonic signature of cables is not something describable "out of context" meaning that it depends upon how the cable synergises with your rig's components. Also it depends upon your listening preferences. It also varies with the specific component (a good cable for your CDP may not work so well on your PA or pre or tuner) or then again it just might. It also varies within the context of any other cabling you have in use - some flavors mix togther better than others. So this is very complex and it's a difficult process, no way around it. For these reasons its basically almost impossible for someone to tell you "how a cable sounds" because that can vary so considerably.
I've eventually accumulated quite a collection of cords that I like, which I experiment with in various combinations from time to time. Take notes and play around with it; this can be a lot of fun.
Cardas I found them fairly lame in my rig although others like them a lot. So you see how this can vary, and why the only way to find out is to experiment. CableCo is not a very good way to try out cables because they can take a long time to settle in, even when used. You have to run them for awhile for them to stabilize, sometimes quite awhile. I tried their service a couple of times, but quickly learned that leads to nothing but frustration. Also they claim to know which cables match well with which components, but in reality they don't know.
Virtual Dynamics is one vendor that sells new or used direct to you, and they will even take back cords for credit or refund (within 30 days I believe). I have a couple of theirs, a Nite 2 and a Nite 3.
Purist I have a couple of theirs. The Dominus Rev B fluid works well on my CDP; good spacial depth. I also have an Anniversary Contego which is presently sitting idle, but is a good very quiet cord and quite neutral too.