If you want to lean more HD650 then absolutely Focal, but you may find them a little hot up high. Some open cell foam like what's in the Senn. covering the entire baffle or a disc just covering the diaphragm will get you where you'd want to be. This last week I was deciding between the step up from the Ananda, the Arya V3, and a LCD-X 2021. From what others say the Arya doesn't sound like what you're after. I went with the LCD-X '21 and so far I am finding it is nicely straddling the divide between dynamics and planars and would recommend you try them.