I have been using Akg K612 Pro for a long time as my main headphone. They are fine in many situations but I always had problems when I have to do mixing and mastering with them. This year I plan to upgrade them. Vsx is catching my attention. I don't know how their headphones sound I would like a open back headphones for home studio though (I think they made a new headphone called Immersion One and it is Planar Magnetic).
So I am looking at VSx headphones and also Hifiman Planar Magnetic ones (like anando Nano or something similar). I would love all opinions on this subjects. Btw, I tried Sennheiser Hd 650 . It sounds so similar to my focals Solo be monitors but Low end didn't make me happy on those headphones. Also I didn't invest money on headphone amps, I am using Rme headphone amps on babyface pro fs.
I would love all suggestions doesn't make me go bankrupt. Also I would love to hear expensive solutions if it is end game for me?