I would have to lean towards the newer 5205, I liked the piece from the second that I saw the first photos.
Like one of the previous answers, I was also able to try it on, and I found that it was so easy to read, and at 40mm it's quite a presence as well as siting quite high up off your wrist.
I also prefer now, to read the date, day, & month by way of the apertures.
Though I suspect as the 5146 is already a Patek Philippe classic, this will remain a firm favourite.