"I tend to treasure transparency, neutrality, high end extension, speed, DYNAMICS, and tight driver control / integration in my speakers and leave bloom/coloring/musicality to the amp. I also prefer speakers that play very well at low volumes with medium power amps."
Transparency
Neutrality
High end extension
Speed
Dynamic (contrasts)
Play at low volume without losing the above
The latest Merlin VSM-MM or MX might be what you are looking for. They certainly excell in all the areas of your criteria, check the archives and reviews. You will get the best customer support in the business whether you buy used or new. Bobby Palkovic is always there to help you every step of the way. In any event you should not buy anything without listening first.
There are many speakers that might suit you and there is nothing clear cut, one man's love is another's loathe.
Speaker choice is a very personal choice, more so than anything else in the chain IMHO. You'll get plenty of suggestions but you really have to do your homework. Good Luck and welcome back!