Fantastic pictures! I have had the opportunity to try the all black version on and the watch wears very well and smaller than the actual size. This watch is certainly on my list as a possible next purchase.
I love the blue Milgauss... so much so that i recently acquired one! I find the blue dial more interesting/unusual looking than the black dial (though that one is nice too) . I say go for it if you like it! It is a watch that really "grew" on me.
I do not have the Nautilus but did recently acquire a blue dial Milgauss, which is a watch that "grew" on me as i researched/tried it. I believe in keeping only those watches which I wear with some regularity so I would go for the Rolex. Chris
Of these OPs, I would say the blue. The grey looks too monochromatic to me. However, I would certainly consider the Milgauss Z-Blue. The dial is amazing and the coloring and lightning bolt seconds hand provide more visual interest.
I have been thinking about my Panerai collection and where I'd like to take it. I currently have an 88 and 190 and love each of these. I'd like to add one more piece, at some point, to add either a 1950 case or a SE. As much as I like some of the SEs, they are either not feasible for me financially