It's really personal preference. If we're talking formal (ie black leather strap), the 38 looks awesome on your wrist. Big watches are a relatively recent thing.
Agreed.
The specialist and I discussed how the 38 is more of a "daily" wear watch, and the 42 is more of the "smart" watch.
Not sure what I would prefer, as this is going to (eventually if one of them ever gets delivered) be my first smartwatch.