Having heard all Hifiman models, the egg shape ones have the most treble and "sss" vocal boost while the circular ones have the perfect treble tuning. Basically, if you're not willing to EQ, I can only recommend either the Sundara or Susvara. Susvara is their only true "house sound". The rest of their lineup are inferior versions of their house sound which is a deliberate move to splurge up to their flagship model. Susvara fits my head more than most headphones out there except for DCA Expanse and Stealth (these two headphones are unbeatable in comfort). I was debating whether to get Expanse, Stealh, Utopia, LCD-5 or Susvara, but after extensive A/Bing for 2 hours, I ultimately prefer Susvara for its overall sonics without any glaring faults. To my subjective listening experience, Expanse lacked the upper treble for me (it should be at least 2-3 dB boosted linearly from 4KHz to 20KHz or equivalent of the Steatlh, Stealth couldn't match the details of Susvara. LCD-5 matches Susvara in details but has tonality issues while Utopia's redeeming factor is only the dynamic driver "slam and punch" traits. Susvara is the easiest to drive out of all the planar flagships as well while DCA Expanse is the hardest to drive.