Hansen Emperor or MBL 101E or Avalon Isis

I would go with Avalons, but def with different electronics. I have personally never liked the Avalon/Spectral combo since it always sounded too thin to my ears. I would consider CAT (tube) or Vitus Audio (SS) to go with Avalons.

I agree with Elberoth2. Avalon Isis with Vitus SM-101/SL-100 combo would be an excellent choice IMHO.

If money is not an object I would also suggest Rockport Altair speakers http://www.ultraaudio.com/twbas/twbas_20071001.htm.

Regarding electronics Hovland Stratos/HP200 combo is also very good choice for both Isis and Altair.

I think that are differents speakers, the Isis need a lot of power and better tubes as CAT, VAC than SS, except for FM acoustics, Vitus, Soulution, Boulder.The system became EXPENSIVE.
MBL needs a lot of power but as is more organic can work with more SS amplifiers.ALSO a very EXPENSIVE system, because the amplifiers tsill are more powerful than for the ISIS.
Pioneer and Hansen are more easy to drive, you need less power, and you can use both tubes and SS, smallers amplifiers, these speakers let you to have a less expensive system, you can change more often the electronics..

If you don´t like what you says as "thin sound " better to use Pioneer, MBL and a little less Hansen.I´m not saying that ISIS don´t have a excellent sound, I owned one Eidolon and I have a great memory of them, for me I can close the eyes and be happy with any of these four speakers, but the cost of electronics is very important for me to feel free to change them.

Audiokinesis,

thanks for your insight into the omnis like the MBL. I was really dying to buy MBL's as I love the sound, but being in a small apartment where the speakers have to sit no more than 24" from the back wall, I had my doubts.

You confirmed for me it was right for me not to go this direction. I am now thinking of the Polymer Logic with the diamond midrange, but it seems that speaker needs to be 10-12 feet from the listening position, which I may not have the room for either.

Duke,

How far should be placed the MBL 101E from the boundaries? Boundaries are for you rear wall or also real and side walls?

thanks