Benchmark / Anthem / Rogue

The rogue would be the best bet and it is a very neutral tube unit that will work on many pairings also it has a tube phono stage built in and it also allows you to tube roll to fine tune the sound to your system using nos vintage tubes which is the way to go too many positives to ignore.

I have the Benchmark HPA4 which is the LA4 plus a headphone amp. Very uncolored. Very quiet. Excellent specs. This is a reference preamp for some reviewers. I like it a lot. It would be good to know what amp(s) you will be pairing with the preamp. 

Resell value = definitely Anthem
Bells and whistles = Anthem
Room correction = Anthem     
     

Everything else?  It's a toss up.  No one can tell you what sounds better because there are 1000 other factors in each of their systems.  They're all excellent products.  If someone says one sounds "better" or more natural, that's only their opinion on their system.  And the truth is, probably not a single person here has owned two of these in the same system; especially all three.

I know you can't go wrong with the Anthem which is why I own it... But no, I have not compared it to the other two.. Mainly because I change speakers so often.                

I've been using the Anthem STR Preamp for a couple of years now. If there's any chance you will want to integrate subs, it does that exceptionally well. The room correction also helps smooth things out, either bass-only or full-range. This product has the most transparent DSP I have used in over 15 yrs of using it. I would rate it on par with the Weiss EQ1 Mk2 mastering equalizer. It is noticeably more transparent than the DSP in the Classé CP-800, my former main preamp. When I use the tone controls, for example, I can't detect *any* side effects.

The outstanding aspect of the Anthem is its DSP features, so if you are going to have a mainly analog system, it might not be the one for you (though you still might enjoy it). The model is in short supply right now, probably because of the AKM fire last October.
I haven't used the others, so can't comment on them.

True the Anthem STR has many modern features to differentiate it in addition to inherent good sound that some will find useful.