ARC amp differences.

Heya,

I got a chance to listen to some Adonis Faber Serifinos the other day and absolutely loved them. They were detailed, but also musical. It was paired with a ARC VT-80. 
 

I was actually thinking that maybe I go up a notch and look at the ARC reference 80s but it was not available for demo. They did have the ARC 160s.
 

would it be to assume ithat if I like the 160s with the Serifinos then I would also like the 80s? If I like the 160s jugs that kind of power just overkill. My listening space is 20x14 and I will rarely try and super loud. 
 

if anyone has other tube amp recommendations pls feel free. I am looking for that slightly warm of neutral sound that holds the detail. 
 

thanks