Nkam
100+ Head-Fier
I do recall the Sony MDR-Z1R having excellent body and dynamics but it's been a while since I heard a pair. I have heard some closed biodyna Fostex's a few times they have a lot of dynamic body. I've been told the TH909 is like a better Tesla Beyer but never had the chance to hear one. Focals may work, but I'm personally not a huge fan mainly due to their slightly metallic timbre, but I haven't heard the newer models. No idea on some of the other new releases such as the Meze 109, etc. There are some cheaper options with great body and solidity with a nice thick punchy sound such as the Cal.1H, but I don't think it will be an improvement in terms of soundstage over the DT 1990.
you piqued my interest in the Fostex TH909. Even though it’s expensive it might be exactly what the doctor ordered.