I'd like to say that I love my new LCD-4's. I had to upgrade my amp (my old Lyr-2 was simply insufficient). They sound fantastic with my new Violectric v281. Was a long wait to get it, but I think I made the right decision on the amp AND the cans.
I also have taken a liking to Peace, the Windows headphone EQ app that piggy backs off of RoomEQ. I'm having an absolute blast making them as conservative or as bassy as I want them to be based on my mood. Unlike all my other cans, these don't start sounding strange/muffled if I want my skull to shake while listening to Kendrick's Black Panther soundtrack. I have arrived at my final headphone setup. These are likely to only ever be replaced when the cans die.
Also, the v281 offered the benefit of making my Kennerton Vali's not sound like trash. A better amp really can make a huge difference. With my Lyr 2, the Vali's sounded nasal and even shrikey at times. It wasn't a power issue as they are not especially hungry cans. But on the v281 all of those issues are gone and I went from planning to sell them and being generally frustrated with the purchase to being completely satisfied and keeping them. The HD650s and all the power hungry cans I have all sound like they were supposed to sound.
That being said, I wear my LCD-4's maybe 8 hours a day. No weight issues, no complaints about the sound quality or overall experience. And Audeze support has been great.
Glad to be part of this family.