May I recommend an audition of the BAT 150se mono-blocks. I'm using them with Eidolon Diamonds and the sound is just magic. I think you can find them used in the 9k-10k range. I wish you well in your search.
Ceramic speakers always worked best with tube amps, I loved Einstein OTL monoblocks on the Marten Coltrane. But for the Avalons I would suggest DMC 15 and DMA 250.
I pulled the trigger on Atmasphere with Avalon as well. This is based on several sources of info. I've got the amps, but still waiting for speaker delivery.
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