I used Superlux hd668b chinese dekoni earpads for a while and enjoyed it very much, and I got the 672 which disappointed.I realized that I wanna have another construction, like Philips SHP-9500, other similar open headphones. Agreed that Ananda is amazing choice, just don't like how I feel it on my head( it's only my point of view ). I think to look something else, to think not only about sound, but for comfort for me as well. I think SHP-9500 not worse than my 681F, especially because it is semi-open, and I prefer only open headphones, or even acoustic speakers. I would buy acoustic, if we had something portable options which I can take in my baggage ( I don't have my own apartments ). And not sure that sound won't be too loud for neighbors.
Also Fidelio X2 was used for listening to my favorite music which is classical orchestral music that requires enough quality for tonal balance and resolution.
Before them I got the famous hd800/S, and TH900 at the same period with 668/X2/672, and with all those good supporting gears like usb stabilizer, expensive usb cables, and expensive dac/amp costing way more than 1K USD.
However there is no meaningful difference between them, but there are meaningful feelings like justification for my family and/or lower income nation's conflicted peoples.
There are some sense of peace and justification with hd668b, or 2nd hand X2 purchased 90 USD.
For big band music I always put X2 on.
I recommend X2 for all around music for you, which sells for around 100 USD.