I know the H390 is a very very capable piece of kit, but…
I have a noticeable lack of midrange in my system. I’ve been following the prices of the used H590 market and for about the same price as I can get a used H590, I can get the 300’s. My thoughts were because the 300’s have a tube component, I might be able to adjust the midrange with some tube rolling. Oh and seeing as I have almost never used the DAC or streamer sections, it might be another reason to switch.