Suggestion between benchmark Ahb2, Bob carver crimson 275 and rogue atlas magnum 2 amos

As a follow up, I ended up getting the Rogue Stereo 100.  It arrived today.  I set it up.  Listened to Charles Mingus -black saint and the sinner lady, the new glass animals, john Coltrane a love supreme live in seattle, and tool fear innoculum. Epic, loud, detailed.  Absolutely marvelous.  Thank you for all of the input.  I am very happy.
 

also, forgot to mention I have a Cambridge audio sub.

@pwoodard922

Awesome! Great choice. That Rogue is a powerhouse; it will hit its rated power (honestly) and gives a good dose of the positives of tube sound without any nasties (sluggish, soft sound, weak bass). Rogue support is also stellar, but you probably won’t need more than a question or 2 answered over the years.

There are also nice options to tweak the sound with tube rolling and bias adjustments. Rogues respond really well to tube rolling since they start out as a fairly neutral base with the stock tubes - there's no strong inherent "voicing" that you'll be fighting against. 

For what it is worth, one of the best audio reviewers gave rate perfect 10 ratings to both the Rogue 100 (suggested in this thread as an upgrade to the Rogue amp raised in the question ) and, more recently, the Benchmark amp.  
 

https://10audio.com/rogue_stereo100/

Thank you for pointing me to these two reviews nc03854.  I have been loving my rogue stereo 100 with my KEFLS50metas, and now, and of course, am considering my next set of speakers to pair them with. 🤔

That thread on the Carver build quality was disappointing.   Looking at it, there are obviously a lot of cost saving measures going on there.   Look at the build quality of Rogue or Quicksilver,  it’s much better for less or around the same