Fiio FT1/FT1 Pro Pad Options

I was thinking about purchasing both the FT1 and the FT1 Pro despite the build quality concerns surfacing online.

However I'm curious as to what pad options can one resort to if one decides to change them?

No official pads are available yet. I thus ask the owners of either of these two headphones. What are your pad swap experiences , if any? Which ones fit? How do they change the sound?