Preamp comparison - Rogue Perseus and ARC LS25 MKII

I was fortunate to pick up a LS25 a couple of weeks ago and have been giving it a thorough listen.  Really nice preamp, my first ARC piece of gear.  It's been fun switching between it and my trusty Rogue Perseus.  Probably not a fair comparison with the LS25 over 3k more when new.  But it is what it is.  Using my Rogue Atlas Magnum tube amp and Snell type D speakers.  

Right out of the box I could tell the difference.  The LS25 is just a little more refined, the word polite coming to mind.  The Perseus gives music a bit of bite and texture, an added fullness and bass presence also. The soundstage is just a touch more open as well.  The LS25 has a slight edge in clarity, with more attack. 

I've always read that ARC tube gear is considered to be not quite as 'tubey' as most.  I think I now know what that means.

Now trying to decide which to keep.  I will do more listening to be sure but I am leaning towards sticking with the Rogue and passing along the LS25.  You all might think I am nuts (most likely I am) but I do enjoy the richer and fuller presentation of the Perseus.   

A question for those with ARC experience:  might tube rolling in the LS25 add a bit more of what I am looking for? 

Ideally, I would like to find a tube pre that combines the attributes of both - clarity with great texture and fullness and an open soundstage.  Any suggestions for tube pres that might fit this description are welcomed.

Thanks!