Decision - Sub vs Speedmaster Pro

[eightball76]

Just a little question for a Friday evening.
I have just achieved a personal goal in my career and was looking at adding a new timepiece to my collection as a gift to myself.
I am Debating between the 124060 or a new Sapphire sandwich Omega Speedmaster Pro. I have a 116600 which I do not seem to wear that much anymore due to the heft (and maybe my age) and I have a small but nice collection so this would be a watch to be worn in rotation (would love it to be my 'one and only' but alas it never seems to be that way).