So in summary, these earpads totally ruin the overall sound quality of the m50xs but increase the comfort factor, and for the m30xs, they 100% increase the comfort factor and increase the sound clarity a little, for me at least. perfect for spring & summer temps. Very comfortable and sound is great & good noise cancelling. It is cramped but it does hold them. You really cant go wrong with these. After a few hours I did notice the extra weight of this headset. These are durable, they stand up to toddler abuse. 5 and that was a good fit length-wise. People on the X-Plane forum agreed that it is a hardware problem. I will have to wear a shoe pad to push my foot back a little.