How big does 15400 wear?

[Recon]

I have my name down for a 15202, but because delivery is expected in 2019, I am debating whether I should buy a 15450 or 15400 to ease the wait in the meantime. I have wrists that are on the smaller side, and usually prefer the size 40~42 for sporty watches. The 15400 is 41mm according to official specs, but are there any comparisons to how it really wears? How does it compare to a Omega speedy (42mm) or the Rolex Explorer 2 Polar (42mm)? And same question for the 15450. 37mm officially, but I heard many people say it wears more like a 39mm Explorer. Thanks in advance!