Need Help - IC , Speaker cable & power cord

I am looking for IC , speaker cables and power cord. Need help for recommendation.

My current system consists of the following components:
EMM DCC2 & CDSD
Halcro DM58
Verity Audio Sarastro
Mark Levinson ML32 (Planning to purchase a ML32,Haven't bought yet.Any other recommendations? Should I use DCC2 as a pre-amp?)* Halcro pre-amp seems to be lack of body and human timbre.

I think the Halcro needs some warmth somewhere to attain a natural balance.The bass of my verity speaker gets boomy and I don't know how to describe that the bass is not very well controlled. For some music that I heard, the bass seems to affect the mid and lousy)

My current cables are cheap cables :
(1) Old cello IC (background is not very quiet,but it sounds open & airy)
(2) Unknown, non expensive speaker cables that may affect the bass performace.
(3) My speakers may not fully break in as I bought it used.
I don't know how many hours the speakers have been operated before as I have used the speakers for about 150 hours .

I am considering the following:
(1) Transparent Reference XL MM or lower model of XL MM
(2) Siltech G6 Eskay creek or classic 188 mkII
(3) Xlo Limited Edition
(4) Tara Lab Omega or the One
(5) Shunyata Python (other recommendation?)

I was told that the magic of Xlo Limited Edition cables is to control the bass very well, but I worry about its ability to deal with the mid & high, and would it be too tight and affect the overall performance of the mid & high? not so natural....? (Are the Siltech & Transparent cables better overall?)Should I use one brand as a set or mix & match?

Does it make any sense to upgrade to this extremely expensive cables? Would they improve the system a lot as I understand that the matching is the most important.

My friend told me that Van den Hul vdh and the " emotion "
speaker cables are good cables. Any recommendation?
Please help. Thanks
Dartzeel..