Harmonix entry level cables ,your opinion?

Have any of you guys tried the harmonix cs-120 speaker cables and the Ci230 mk2 interconects. My dealer just let me tried some samples. So far only 20 playing hours on them and specially the speaker cables compared to my kimber 8tc, the top end has smoothed , acoustic instruments sound more real, but i,m not sure if i have loose some bass impact and definition. Wondering if these cables require a long break in? And how do they compare to others in their price range, I,m asking this since I can,t compare other opotions here in my country. Thanks in advance