A split king bed… glorious.
My wife and I just upgraded from a queen to a split king and we love it. If one is rolling around the other doesn’t notice, it has separate adjustable bases, so one can elevate their head if desired.
Plus, when we get mad at each other we can push them apart
We don’t have room for a king even though we’d love it, one reason I adore staying at hotels! But another marital bed tip, each of you gets a separate blanket or duvet. I learned this in Europe, there’s always 2 separate duvets on a shared bed. Not having to wrestle coverings has saved many a night