From my last experience (still ongoing), I like the closed maytech one.
I buy the customized (not only the logo ) Overion 130kV, before summer 2017 (for my e-MTB, and I ride them hard, everywhere every time raining/snowing, mud-land etc. from less than -0°C to +40°C at 70A Batt and Motor max).
And I still run them today on my last little AT board with GD. Still so powerful! For standing startup they’re awesome, I never touch them or make any maintenance (the only issue was with the sensor extension where one pin was left ).
For now, if I have to buy a new motor, it will be the new v2 or still a Maytech I guess.
Or the new 6880. Like (except the customizing) they’re the same inside as the enclosed 6374 but with the outer big bearing that seals the can. But they’re longer and heavier just for the bearing …
One motor who handle really great, run quieter, and torquy to is the Dyamond 200kV 6374.