Love it! Beyer is a GREAT company to deal with. I'll share my story too, if you don't mind.
I bought a pair of the original Beyer T1s about 6 years ago (the 'version 1'). I bought them used, and the person before me had bent the metal insert where the earcups insert into the headband. They held up a long time but eventually gave out and snapped. I sent it in for repair, and not only did they fix it, the replaced the padding on the headband and the padding for the earcups. Came back basically 'all new' except for the drivers themselves.
Fast-forward to about 2 weeks ago - I'm swapping cables and manage to remove a solder trace as well as puncture the diaphragm of the driver itself. Oh no!!! I'm about to send it in for repair, when I notice Beyer has replacement drivers on their site that you can purchase directly. So I order up a pair.
A few days later, I get an email - "Sorry sir, we're actually out of stock for the version 1 drivers, would you be OK with the v2 drivers? They are a drop-in replacement". Uhm, same price? "Yes, same price". Well OK!!!
Got them last week and the motor and housing are all similar/the same, its very, very clear that the diaphragm material is a substantial step up in quality. So I install/solder them in, let them burn in for a couple days and....wow - they are exactly like the old T1s except better.
Looking at my headphones, there's almost zero original parts left on them. I LOVE that Beyer makes their headphones so modular and supports them over the long haul. Great company and great sounding headphones too.