Solid performance for a decent price
I received the elite hybrid for my AKG K701. They make the headphones feel lighter and I didn't notice any big change in the sound signature, maybe a little bit wider soundstage.
The original earpads were causing me skin problems after wearing them for several hours in a row, I hope those will fix that issue, only time will tell.
I also hope they age well, but for now it's a definitely good way to improve these already excellent headphones.
Would recommend to a friend.