I am in the midst of upgrading my ICs to Cardas Hexlink 5-C and Transparent Ultra XL, and hope to change my speaker cables to Transparent Reference XL (not inexpensive) from my existing Audioquest Midnight cables (have had the latter for years). These choices are driven by a gentleman named Christiaan Punter who is the proprietor of the HFA (www.hifi-advice.com) website. Christiaan is a devotee of Apogee Acoustics, as am I, so I read his reviews with particular interest, communicated with him by e-mail, and ultimately took his lead in terms of proper cabling.
Gary
Gary