I was determined to get some Argons to replace the DT 1990 Pro, but didn’t realize there was a 14 WEEK lead time. Yikes. Had to cancel my order. If I have to wait that long I might as well wait 4 weeks until I have the money for the Fostex TH909. I’m sure I’ll love those.
Even one reviewer said “If you like concert sound, you will love these.” LOL. The first line of my original post is “I’m looking for concert sound…” 
The TH909s are also much easier to drive than planars and can get nice and loud without distortion, namely with bass.