...I'm being vague partly because the rest of the system isn't set. It's my first audiophile setup, so I'm starting from scratch.
As a general statement, I've found the following to be true to the point that it's almost become a mantra of mine:
Equipment sounds very different in different systems.
Whichever amp you purchase, in roughly the same hierarchy (opinions differ, but diligent research can cull the also-rans), can and will change dramatically in it's overall presentation in any given system. One amp sounds liquid-smooth here, and with a speaker/preamp/source/cable/room change, it may lean the opposite way. Been there many times.:yes:
This has happened to me over, and over, and over; as I change gear likely too often. I no longer EVER say something is bad. It may have sounded bad in a particular system, but without trying many different pieces of equipment with it, it is wrong to dismiss it (and slay it on the interweb).
Your system will morph. Sooner than later. Unless you are either extremely lucky or really don't care. Also, as a new audio geek you likely don't really know what sounds different and why. Your writing shows you understand what to listen for. Is that based on aural experiences or what you've read? If the later, most any decent system will sound great. Only after spending time with it and others, will you start to understand what you are missing or wanting more/less of.
I would argue that if one is putting together a '1st' system, one should purchase used gear that has already depreciated. I would also suggest staying with well-known/well-regarded gear that resells quickly and easily. Again, most '1st' systems last a short period before one either wants to move laterally, or climb the sonic ladder to different gear.
You can build your system around your amps if you want. It's more difficult, as your choice of speakers that really shine a one particular amp diminishes greatly. I'd suggest buying speakers first. Period. They tend to stick around a bit longer if you know what you are buying. At that point you can either bring multiple amps home to audition, or at least talk to people with the same speaker as they will likely have run though different amps/sources/preamps/cables in attempting to focus the system.
My two cents. Good luck!:thmbsp:
(sorry, no personal experience with any of the amps listed)