useReducer vs createReducer

Hello! What are the pros and cons of

1. the

useReducer

useReducer

in the tutorial (https://www.solidjs.com/tutorial/stores_immutable -> scroll down in the left pane), vs
2.

createReducer

createReducer

createStore

createStore

while 2) is built on

createSignal

createSignal

(source)

If I'd want to put a normal JS object with a couple of fields in it to store some state... which one is recommended? thanks!