Refinement wise origins is to Fallout 3 and Odyssey is to New Vegas.
I liked Origins. Tomb exploration. History lessons. Angry hippos. It was solid.
Odyssey is my favorite of the 3. Worth it.
Valhalla was too long. They took the Odyssey formula and just did too much. Normally I completionist games, but I could not finish those repeatable side quests. Odin’s marathon runs among other things. After Valhalla I had no interest in buying Mirage and doing it again.