DM or M1?

I want to know, what’s the differences between a DM and a M1?

The Dark Magic is a metal/plastic hybrid. The M1 is all metal, and a little smaller than a DM.

I mean like playing differences.

I know the DM is a good grinder but the M1…

Is a much better grinder, as it has a better finish. Also, the bearing/response is better, unless you prefer something else, and it has a better size, in my opinion