I voted for Qiyi due to the fact that they are my favorite cube company at the moment in regards to there cubes, but I think that a company like Dayan might be more willing to help you out due to the fact that they are a smaller company right now and they might want to get there name back out on the market. I am probably wrong, but that is just my thought
I wish you the best though with any company, and I hope that everything works out. I am exited to see the mass produced version, and am glad to see your dedication to this cube.
Actually... that is a wonderful idea!