In my eyes, the left also just seems to fit all together more, while the right lacks that "something", you know, that added touch of color which a moon phase would give. Actually, both photos are of red gold version, which I have decided on as the metal I want.
Since the 5146R isn't out yet, I haven't seen it. But I have seen the 5035R and I really, really do like the looks of the Roman numerals much better. They give it a more classic look, which in my eyes, "makes" the watch. But without the moon phase, it does look kind of plain.
Thanks.