They are very resolving indeed. Lots of detail and textures. But I guess that also has a lot to do with the rest of the system.
For the 02s, they are the most detailed I have heard. But also very musical. Compared with the 03s, they have managed to increase resolution while keeping the nice musicality.
Specific to your question, yes, the strings sound fantastic, and you can actually hear all the intrinsic sounds to the diferent instruments in a way I have notmheard in other systems.
Now the drums I could not assure you if you can tell the diference in quality of paper or leather... I am not that familiar with drums, and maybe that is too much of a claim by whoever makes it, but not sure., since do not listen to that much music with drums. Although the other day did listen to a jazz trio and drums were fantastic.