I just got the earpads today and the first thing I noticed is they are a tad firm and the hole for the ears is definitely larger than the OEM earpads.
Installation was fairly easy all in all. The materials feel nice and they definitely feel like they're better out together than the OEM pads. In terms of comfort, as someone with larger ears, I appreciate the larger holes a ton. My ears have never been more comfortable. But I did notice even after ensuring the pads were fitted well, they do have slightly worse noise cancelling than the OEM pads. But that said it's not a big difference and when you're listening to music the noise cancelling functions just fine. I'd say for the upgrade in comfort and build quality, it's absolutely worth getting.