South Branch General Store at 6330 East County Line Road, South Branch, Michigan.

My fave convenient store. Owners Dave + Merri are right there for you. If they do not have an item you want, they will do their very best to get it in. They keep notes. They wear + sell artistc T-shirts with their store name, etc. on them.
The store is well organized, so one can find what they want easily and quickly.
The store is never messy. It is well kept and clean. They are in an excellent location on South Branch's only main road but close to all the trails frequently used by ATVs.