Also, the Butler's are tube-ss hybrid's... not really a choice for ss-only.
BTW, in a room as big as you're describing, I'd definitely consider 200wpc+. At 2,k that's tough. The McIntosh MC-252 would be on my shortlist.... I've heard it's more neutral than their others.... maybe worth looking into... and is a good value used... but likely 'in the 2,k's' rather than 2,k....
BTW, what about the Ampzilla?
-C