I personally prefer the '64. The '65 dial just looks a bit worn to me and I don't really know why. I think the watch just pops a bit with the smoother dial.
On another note, that blue bezel is absolutely incredible. One of my goals is to get a 321 Speedmaster with a non-black bezel. The 145.022 I currently have has a ghost bezel that's faded to a dark gray that looks silver under bright sunlight, but I've seen Speedmasters with dark green and dark blue bezels that look incredible. The dark green is especially spectacular.
Thanks so much for sharing this!