I guess it depends on your budget, savings, disposable income etc. If you have plenty of money, get a Series X.

Personally, I haven't found much usage for mine as spend most of my time on PS5 but I've had every Xbox console and played every exclusive up until now already anyway.

Halo, Gears of War, Forza have a bunch of great games in the series, amongst a bunch of other exclusives. If they don't really interest you then you may not find too much value in Xbox. Look at what games are on game pass also, some of them are full price on PS5 yet you could play them on Xbox for $2 a month.