You share them in stunning photographs indeed. Very interesting Milus and its original way of displaying seconds! Your 5196 Calatrava is a very elegant dress watch with a nice size at 37 mm for this type of timepieces.
I guess 45 mm is a wearable size for a big sports watch like your Milus or Tag Heuer. I feel you enjoy so much wearing your 40 mm Patek. As it has been said it´s all a matter of design and personal tastes and we should not restrict ourselves to trends around sizes and follow our personal feelings always.
Interesting selection my friend. Hagwe! Abel