I am thinking of buying the Avalon Osiris.

BTW-I took a look at your equipment list.I begin to wonder if you are a collector or dealer.If you are a collector,I really love your stuff.You definitely have the ancillaries to drive the Osiris.If a dealer,you have some great stuff,that unfortunately,you won't experience much.

One thing,pertaining to room acoustics,is PLEASE make sure to give CLOSE attention,if you go for the Osiris.Your room seems a bit under treated,though I have not seen the entire room picture.The Osiris MUST have a very carefully treated room,and this is how I have heard them.Based on this parameter,you should be the envy of a ton of hobbyists.Including me.

Best regards.

Tall ceiling, large room, high current amps with stiff power supplies. The speakers were designed with MIT cables in mind. See Jonathan Scull's write-up in the Feb 1996 Stereophile, page 41.

Don't be afraid, just do it

In all seriousness, looking at the pictures of your room, you have great gear already, but how big is the room? The thing that has most impressed me about Avalon speakers (Sirspeedy, if you ever sell those Ascents you've lost your mind--classics in every sense of the word) is their soundstaging ability, and ability to disappear, but they really need to be out a bit into the room to be able to do this at their best. I can't tell how far out from the wall you can bring them, but where you have the SFs would not be far enough, in my view, to get the best out of the Osiris.

You've got to be single, with a room and collection of gear like that!