Enhance description of state management stores

Revised explanation of stores for clarity and detail.

Author: thomasbuilds

src/routes/concepts/stores.mdx

@@ -3,9 +3,7 @@ title: Stores
 order: 6
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-Similar to [signals](/concepts/signals), stores are a state management primitive.
-However, while signals manage a single piece of state, stores create a centralized location to reduce code redundancy.
-Within Solid, these stores can spawn a collection of reactive signals, each corresponding to a particular property which can be useful when working with complex state.
+Stores are a state management primitive that provide a centralized location to reduce code redundancy. Unlike [signals](/concepts/signals), which manage a single piece of state and re-render entirely when updated, stores retain fine-grained reactivity by updating only the specific properties that change. They can generate a collection of reactive signals, each tied to a specific property, making them ideal for managing complex state efficiently.
 
 ## Creating a store