One thing I'd say you likely Don't need (necessarily) are expensive, overdesigned drivers. Even ordinary paper cones are quite competent and capable of very nice combinations of musicality and detail/resolution. An exception in your case might be planar/electrostatic/ribbon designs. These, if they fit your budget, can offer even more separation/clarity/transparency and so forth.
Where I think the most design money must be spent in your case might be on the crossovers and it will be a challenge for you perhaps to find an example with nice, ordinary drivers combined with excellent (expensive) crossovers at an affordable, or entry-level price. Of all the design components in a speaker, I'd say generally that the crossover is the single biggest obstacle to good sound. But this is only because most manufacturers end up giving it short shrift - they likely could do better, but they simply don't. Most people don't realize just how important crossovers are to the kind of sound they are looking for and most makers seem content to let that sleeping dog lie, if you will, rather than try to educate the buyer. But for you, crossoverless designs are at least something to consider and to go and hear, if you have the opportunity. Single-driver designs stand to save you some big bucks and a long time looking by doing away with the crossovers altogether. The only real catch to look for might be the relatively rolled-off highs since no single driver is truly considered full-range.Crossovers may take the single biggest hit to sound quality in the overall resolution/clarity/transparency/coherency package - perhaps especially the coherency - whether it be dynamic, tonal, vocal intelligibility or spatial coherency.
All that I'd add is that while you'd want speaker sensitivity to be modestly high, you certainly don't want it too, too high, or you might be dealing with a system hum that is most annoying at low volume levels and that you then can't get rid of without swapping out gear. In the low 90's might be ok, but 100+, almost certainly not.
Where I think the most design money must be spent in your case might be on the crossovers and it will be a challenge for you perhaps to find an example with nice, ordinary drivers combined with excellent (expensive) crossovers at an affordable, or entry-level price. Of all the design components in a speaker, I'd say generally that the crossover is the single biggest obstacle to good sound. But this is only because most manufacturers end up giving it short shrift - they likely could do better, but they simply don't. Most people don't realize just how important crossovers are to the kind of sound they are looking for and most makers seem content to let that sleeping dog lie, if you will, rather than try to educate the buyer. But for you, crossoverless designs are at least something to consider and to go and hear, if you have the opportunity. Single-driver designs stand to save you some big bucks and a long time looking by doing away with the crossovers altogether. The only real catch to look for might be the relatively rolled-off highs since no single driver is truly considered full-range.Crossovers may take the single biggest hit to sound quality in the overall resolution/clarity/transparency/coherency package - perhaps especially the coherency - whether it be dynamic, tonal, vocal intelligibility or spatial coherency.
All that I'd add is that while you'd want speaker sensitivity to be modestly high, you certainly don't want it too, too high, or you might be dealing with a system hum that is most annoying at low volume levels and that you then can't get rid of without swapping out gear. In the low 90's might be ok, but 100+, almost certainly not.