Awesome! Did they ask for proof of purchase? I don't own the headphones but wouldn't mind trying the pads.
Yes I purchased the Classics around May of 2017. My understanding is that there are anywhere from 2-4 different variations of pads including the Neos (not sure if Meze ever clarified this, I have dropped off following this thread long ago). The pads that came with the Classics were the smalls (I got the white/silver edition). I spoke with Meze support and they shipped me the larger pads free of charge. The updated pads didn't really help much and I still found them to be much too small. So to answer your question, unless they have released a newer, larger pad since ~ August 2017 then yes I have tried the latest version but it didn't help much.
I'm not 100% sure if I had the second or third pads shipped to me by Meze. Please see my above response. Regardless, all Meze pads that I tried were painful for me in long listening sessions. All sizes were comfortable at first, but if I kept them on for more than an hour or two it began to dig into the side of my head.