here are a couple if suggestions. you really should look at your interconnects first ( they are the first to see and effect the signal )
speaker cables are important but i would start with the interconnects first.
try one pair cardas quadlink or cross between your cd & pre and maybe a pair of transperent musiclink plus or super (very smooth and coherant)between the pre to amp. the cardas is very warm and full bodied with excellent bass. I have reacently sold my balanced musiclinks pluses because my system was a little too laidback. dont be afraid to mix and match your interconnects, i tried all cardas, xlo, tara and transpearent. the best result i got was the cardas between pre to amp and xlo beteen cd to pre. the transpearant musiclink plus was very close to the cardas but i preferred the warmth of the cardas. the xlo was very revealing.
for speaker cable i would try some used xlo type 5 or 6 depending on budget.believe it or not i have read very good things on the monster 2.2 or 2.4s (biwire). i am not a monster company person but from what i have read( audio review)and people that i have corresponded with, they appear to be a good cable ( again check audio review)
note on biwiring: if a someone says it doesnt make a differnce, believe me it does. take some home and listen for yourself.
however, it should be a true bi-wire. either 2 pairs of cable or a shotgun design ( 2 pairs of cables that share a common termination at the amp end). some maunfactures take it a step further and even seperate the positive and negative cable ( i am selling a pair of tara master generation 1 here on audiogon if you want to see a picture). i am not trying to sell them to you,please note i would strongly suggest upgrading your interconnects before your speaker cables.
i hope that helps out.
best regards,
mike