the smoothest sounding speaker

Aerial 7Bs have a smooth high end. They might be worth a listen.

i would say a quad 57 is very smooth while still sounding like music. Likewise a spendor 3/5.

Aeriel 7Bs and Silverline Sonata IIs. I have owned them both, and didn't care for either of them. The Sonatas had a midrange coloration and the Aeriels sounded tight and closed in. Both average, but not exceptional speakers.

Oz

I personally love the Aerial 6's - I have a small square room (12 X 15)... lots of clean SS power (Levinson 23.5) and some acoustic room treatments. I am upgrading to the Aerial 9's as soon as I can find a nice set in Rosewood. I like the idea of the 20T ... but man, I just cant swing that much cash. For the price I thought the 6's actually sounded sweeter (less fatiguing) and had better imaging than the 7b's. I thought the 6's were a little weak when you hit higher volume levels - the 7b's did a much better job in that regard. The 9's were a combination of all the good in both the 6's and the 7b's...

Verity Audio Fidelio