Hobby:
I am running a Cary 306 SACD with a SLP-05 and a pair of Cary CAD 500MB amps, driving a pair of Martin Logan Summits. Ironically, I am currently comparing the 306 SACD to an Ayre C-5xe universal player. I feel the preamp is the most important componet as far has giving a wide berth of change in a system. I previously compared the SLP-05 to an ARC Reference 3 and as Fjn04 stated (and I agree) the Cary is a bit warmer than the Ref 3. In my system and room I didn't notice much of a change in sound stage depth or width. However, the Ref3 seemed to bring the sound stage closer, moving the vocals forward. The ARC also seemed more accurate in the very high end, but to my ears sometimes bright.
So, to your question, I think the SLP-05 would be a great match in your system. I don't know the Aerial speakers, but with your amps the SLP-05 will, my opinion only, give a warmer feel to the sound. With my Martin Logan's I need the high power of solid state amps, however, the SLP-05 seemed to take off the solid state glare. Another point with the Logan's is that they are so transparent that at times they tended to be a bit harsh. Here again, the SLP-05 smoothed things out. Its all about synergy.
As far as the 306 SACD compared to the Ayre C-5xe, its close; thus far I am liking the Ayre a bit, but the jury is still out
