Edit: I have more accurate thoughts on these pads a few posts down. I did some more testing and found this initial reaction to be inaccurate.
The yaxi Grado pads are a big NO for the Hemps. They muffle the sound and are not really any more comfortable than the stock F-cush pads. They are surprisingly scratchy when compared to the porta pro pads I also got (great upgrade for the porta pros btw) and not really any softer than the F-cush pads, although mine are well broken in, so this may not be totally accurate for new pads. The purple would look nice with the all black plastic models, but is not all that good looking with the hemp wood imo.
I also got some Geekria donut pads (left)
They sound fine but are much warmer than stock pads and also fit looser, so they shift around.
It seems that the stock F-cush pads are the best option, especially after they get good and broken in.