A movement which was quite reliable. I had three of them, the 301/A , the 302 and the 304.
Like Sergio, I wold go for the pre vendome version OR... If your wrist can stand it, the marvelous PAM 300. But its 52 mm case is too big, at least for me.
It was love at first sight, the movement is super cool, the watch is close to the original proto from the 40's. But the 52 mm case killed the deal for me.
Best,
Nicolas