Would replacing my PX8s with the Mark Levinsons be considered an upgrade?

I’ve been using my PX8s for over a year now, and it’s been a great experience. I’m an iPhone user, and I usually listen wired to my phone, occasionally plugging them into my PC. Sometimes I feel like my PX8s aren’t as detailed as I’d like, and I think I could get something better. Of course, I still want to keep the versatility of using them on the go.

I’ve heard a lot about the Bathys, but I’m not sure.

Any recommendations would be appreciated.