Alumium & Plastic Omni wheels ~ pros and cons

Well, the title says it all, what are the benefits of each?

I can’t give exact pros and cons because our team has never used omni wheels. However from what I have seen from other teams over the years is that Aluminum for the rotors of the wheel work well. I’ll do some searching and try to find some pictures of omni wheels for you to see. Is your team considering omni wheels for any particular reason?

This is a great design.
Also a good design. <-- Proves omni wheels can take a beating when built right