Which balanced IC between pre amp and power amp?

Agree with @soix Besides those, take a look also at Audio Envy.

I have a completely balanced system using all Ayre fully balanced components.   If indeed your stuff is fully balanced, there isn't much difference using any good (and maybe some not so good) balanced interconnect.  The speaker cables have great differences, but not so using balanced interconnects.

@stringreen ,
+1, you beat me to it.

I know AtmaSphere, Ralph Karsten, believes that differences in  balanced cables brands will be minimized IF the equipment follows the balanced protocol (AES 47). And, just because equipment has balanced input/outputs doesn't necessarily mean it follows that protocol, so best to check first with the manufacturer.

I use Ralph's interconnects (25 feet) in my system and short speaker cables (6 feet) as speaker cables will impart more coloration than balanced interconnects.
Bob