hifiman he-560 hex v2 edition x planar

Hello, I just joined this forum and the hifi audio game pretty recently. I'm active on Reddit and bought my first pair of hifi cans audio 3 months ago. Basically from reviews and research I decided to buy myself a pair of He-560s paired with an Uber Schiit Stack. I love them, but I don't have...

I'm currently running the he560, and find the weight just tolerable, and the sound quality is phenomenal, excepting that the I find the treble slightly sibilant. In the lineup, are the HEX's a straight upgrade over the HE-560, or is it give and take, and if not, are there other planar options...