This is my observation (I'm currently running M1 0W40), if you must run a xW-40 oil, M1 0W40 has better technical specs than 8100 0W40. M1 has higher HTHS and TBN, which makes it more shear stable when you flog the motor, and it's more serviceable. 8100 5W40 x-cess is more comparable to M1 0W40.
I also notice from many oil analysis reports that fellow owners are getting good wear results from the newer 10W60 Edge Pro with titanium and higher moly.
It's up to you to decide.
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