Naim Supernait vs XS vs Exposure 2010s

Anybody compare these amps?
My speakers are Devores gibbon
super 8's and I have heard the
Naim supernait with these speakers.
Very nice. Most musical sound I
have ever heard. My one complaint
is soundstage width. Even with their
expensive cds2? (18,000 $) cd player
the width would not increase. However,
front to back imaging was really good.

I hear the Exposure 2010s is musical
and transparent but nobody comments on
soundstaging.

I would also like to know if the Naim
XS and Supernait sound the same? I read
somewhere that the XS is smoother and rolled off.
For my system anything smoother than the Supernait
would be too smooth.

Would appreciate any insights and please don't
post links to forums that require membership.

Thanks