Audio Aero is better. The latest version has an analog passthru to allow for the use of a really good tuner, thus avoiding the pre altogether...unless you are still using lots of vinyl.....alsso, the AA is very upgradable as I started with the circuit board servicing the P4 chip and I upgraded to a board using the 5.6 chip and I will soon be upgrading to the latest so I can also have the analog passthru.
At the moment I run my satellite feed through toslink, my DVD through coax and the AA's DAC handles is all really quite well.
If you do a search here on Audiogon you will find many a satisfied customer, even from two years ago when the AA Capitole Mark II was released with a few bugs. The P4 chip pretty much fixed all of those problems.