Given what you have said so far, I would say Dynaudio. They are detailed but musical.
However, some thoughts. If you want high end audio sound... realistic soundstage, with instruments set in them like they would be in real life then typically your speakers will be in a triangle with your listening position. So, you should consider that. My system is for instance in a 8’ triangle this is very typical... 7’ - 9’. You might do some experimenting with your current system. Get it in this configuration and do some experimenting, you may find you can get lots more out of your current system and learn lots before buying new speakers. Small changes in toe-in can completely change the sound stage.
Also, I would be a bit careful of not getting too much of what you ask for with your current receiver. Its sound is a bit forward and pretty dry. Moving up with much better speakers as you plan to (which is good)... you might get more than you are bargaining for. You might consider a more musical speakers like Sonus Faber.
If one is going to do a major upgrade of a system, speakers are a place to start. Get the very best speakers you can that appeal to your ear. Then upgrade the other components to support the speakers and achieve the kind of sound you want... the electronics are a big factor in how dry, or musical, or analytical or dynamic you system sound. So, if this is your plan... speakers are the best place to start.