Aww I was thinking of getting the SMP300 but it's a little big for my taste, Was hoping this would wear a little smaller ha.Although 2018 SMP is 42mm it wears smaller than the 300 MC which is 41mm due to the lyre style lugs coupled with smaller end links. Certainly try both on to get an idea and feel on your wrist.
Have you tried the SMP on though? Measurements aren’t what they often appear. If you have tried it then maybe a 39.5mm PO?Aww I was thinking of getting the SMP300 but it's a little big for my taste, Was hoping this would wear a little smaller ha.
I made this exact comparison too and kept going back and forth to make up my mind. Kind of made a study out of it when trying to decide which to keep as my standard every day sports watch.