Moving on from Nordost Blue Heaven to...?

Have you tried the entry level Transparent cabling that won Product of the Year award in TAS. I would also call the Cable Company and describe your system and give them a budget to work with. They maintain a database of customer comments that track what other people with similar equipment have found to be synergistic. So they can make a bunch of recommendations for you and then provide you with loaners for home evaluation. You can then decide what works best for you.

http://www.thecableco.com/

Just on a whim,I put in a low bid on a set of ATCables Gold Trace ic's that were on auction here on A'gon.Well,I won them and put them in place of my Blue Heavens.At first,no big deal,after about 20 hrs. the sound really opened up.Everything was,cleaner,for the lack of a better term.They are still in my system and the Blue Heavens have found a new home.This is my experience in my system,yours may differ.Good luck.

nordost is great for particular systems, ones on the warm side of nuetral, i replaced my nordost with acoustic zen ..started with the oscar i/c just to compare..oscar did more for less, after that put in the wow ...everything became better ....now im using the matrix reference II...system is at another level, ones i have some more money...silver reference will go into system...great cable very fair prices..awsome sound !! ive tried 15 different brands non were better then acoustic zen, and they were much more expensive in most cases.
happy new year.