Little bit "forward" sound - what cables to avoid?


My system with Cary SLP-05 sounds great, but just a little bit "forward" to my taste. My PC and interconnects all are Wireworld, and I feel to explore all SLP-05 potential I need something better - I am thinking about Kubala-Sosna, Purist Audio, Nordost, Shunyata...
I know the choice of cables is system dependent, and matter of taste... But, is there a common opinion which cables are known for tendency to "forward" sound and I should avoid?
I do not have experience with cables and any help to narrow my choice is greatly appreciated.
Thank you.
Boris.
128x128homosapien
Thank you, Tvad.
Once again, I am not looking for a way to fix forward sound, it is not a problem. I just want to get better cables, and asking if there are cables that potentially can make it a real problem. If cables have nothing to do with that - it's fine, or, as Rgs22 said "I did try Nordost Valhalla ICs once, and they were extremely forward", so at least I will not look at them.
Thank you.
Boris.
Post removed 
I guess I did not make myself clear - my fault, sorry.
Anyway thanks everybody for trying to help.
Boris.
Homosapien, no offense taken. Adjectives used in audio can sometimes be confusing especially with cables when objectively we cannot quantify brightness or warmth with them. I often associate forwardness with brightness and laidback with warmth so I have presumed your system sounded a little "bright". Now I understand what you're looking at. As Tvad has suggested(which I agree), wires won't do it as they are more towards fine tuning the sound. If you want to sit a few rows back and have a more 3-dimensional sound, you can either look at the electronics or the room for bigger effect. You can be surprised on the changes if you place some diffusor panels at the back of your speakers. In my case, I find the effect to be 10X more noticeable than swapping cables.
To sum up for the adjectively challenged... the OP does not want his system with new cables to sound "more forward". He is content where it's at now. Of course that begs the question why new cables? Which as noted make no real difference. Length, look, flexibility?