I thought both were good... the ending of 1923 was crazy.

Last time someone asked me about it, I got accused of giving away the details so I won't say a word, but definitely to me worth watching both.

I really liked 1883.
Haven’t watched 1923
Watched about half of Yellowstone as it came out but lost interest due to family stuff that happened. Plan on watching it again

1883 was OK, 1923 kept my interest since my grandfather was a WW1 veteran like Spencer (although mining lead and zinc was much less glamorous than dangerous game hunting).
I was somewhat disappointed with the ending of 1923, but life can be disappointing.

1883 was the better of the both imo.
Tim McGraw actually did a pretty good job.