Lived in multiple countries and had an Aldi close in them all. The quality and variety does differ. In particular the quality of the meat and fresh produce and I agree state to state can provide a disparity. I suppose that can be hard to imagine if you are used to a consistent Aldi.

There are quite a few staples that I liked they were very cheap in comparison to the bigger stores. In particular the chocolate, kettle crisps, cheese twists etc.

I also found it helpful for stocking up when budgeting. Each Jan I would go buy the giant soap powder, dishwasher tabs, hand wash, toothpaste kitchen roll, olive oil, anything that could be stored in the garage. This stopped me visiting the other stores so much and spending on junk.