I was between an AT and the GM (Blue dial). In fact I went to the Omega boutique to purchase the AT and couldn't resist trying on the GM. It left me doubting the AT which I couldn't believe as I had researched it for about a year. Needless to say that within a few months I became a very proud owner of the GM and absolutely love it.
Between the two, I do like the Globemaster - though I think the Day-Date is very underrated.
(I am dreaming of the day OMEGA revives their Day-Date line and introduces a svelte 36-39mm option in stainless steel on a bracelet, perhaps with dials like in the current Aqua Terra date collection… that would be better than a Globemaster to me ☺️)