I've only tried on the 5230G, just before they discontinued it as well as the 5230R: the fit on the wrist of the 38.5mm case (with 46.7mm lug-to-lug) was perfect. But I think I much prefer the "pebble smooth Calatrava case" of the 5110 and 5130. The 37mm ...
And I've been there, exactly as you, but for the G version instead of for the R. I must say that I like them all (5110, 5130 and 5230) for different reasons. My advice is that you should try them on and choose the one that sings to you more, they wear and...