First foray into tube amps

I just read the thread on McIntosh and it has prompted me to start this thread.  I would like to try a tube power amp, but I have no experience with tubes.  For now, at least, I am pretty well settled on the rest of my system: Stirling LS3/6 speakers with dual SVS 3000 micro subs, Node 130 streamer with PD Creative/LHY power and English Eight switch, Bacch4Mac crosstalk elimination and DSP, RME Fireface dac/interconnect.  I’ll be replacing a Peachtree Gan1.  The room is 23x16x8 and is well treated.  I listen at low to moderate volumes, lots of vocals, blues, Argentine Tango, some classic rock.  I love that BBC mid-range magic, and think I want a little more warmth than I have now - but without giving up any precision or detail.  I find very analytical high end reproduction to be unpleasant, though.  On the low end, I dislike mushiness.  I really like bass details without slam - think of Holly Cole’s Train Song listening to those bass transients tail off.

So, I think that some tube amps might fit the bill and are within budget (say $5,000).  Here is my provisional short list: McIntosh MC275 MK6, Conrad Johnson MV60SE, Quicksilver Mid-Monos or 88 Monos, PrimaLuna Evo 300 or 400.  There are many others, and I’d welcome suggestions. I can’t tell if these or some other amp would likely have better synergy with my speakers/room/music preferences.  I realize that I may need to try several amps to find which one sounds best to me - but where to start?  Many thanks.