Anthem STR or BHK (PS Audio) preamp?? Thoughts


I'm a big fan of my Anthem STR and it's ARC feature but I'm really not using it that much.  Has anyone been about to kinda compare it and the BHK preamp?  Any thoughts?
dtximages
The BHK is a fine unit. The tube stage is nice. Have never heard the STR. It appears to be about 2 grand cheaper. Looking at their website, it appears to be a very nice unit.
Which of these amps would be the better pairing with Magnepan 3.7i?  Thanks for responses. Bryston 4b3, PS BHK 250, Pass Lab x250.8.
Curious as to what you mean that you aren’t using the ARC function much? You prefer it without the room correction? Or just sometimes? I would think that would be the deciding factor. 
@mofojo  I just normally listen without it for a couple of reasons..

1. Room isn't treated well enough to get the maximum out of ARC yet.

2. Swapping speakers so often, I want to hear them "organically".  

3. It bothers me that ARC is doing a whole other analog to digital conversion on my signal, therefore I have to either be ok with that, or not use an external dac.