Question for all you Aldi shoppers!

I do all my grocery shopping at Meijer, but I'm wanting to start doing some shopping at Aldi. I've only been a few times. I know there are some things that are always a better deal at Aldi, but there are also things that you should pass on and buy elsewhere.

What are some things you always pick up at Aldi? What are some things you only buy somewhere else?