Thanks for the help - I had considered the Cyrus as everywhere you look it seems to get top-notch reviews.
As regards my tastes, I listen mainly to modern blues although reasonably frequently delve into motown, rock, jazz and classical. Pretty much everything other than pop and rap really !
Where my current system fails is that it seems to get 'confused' with some more complex, multi instrument music. With single voice and 'simpler' tracks it still has the ability to make the hairs on the back of my neck stand up (something I clearly don't want to lose) but often tracks with a lot going on can sound far less well defined and are definitley less involving.
The DAC suggestion would be a good one if I had computer based music but I don't !