Back yard shed recommendation. Northshore.

Looking to purchase a backyard shed.
I really like the metal shed my dad has. It’s a 20x20 with roll up doors on opposite ends with a regular door next to one. It has 4 windows.

Is there a good recommendation on the Northsore for sheds?

20x20 would be nice but 14x20 would be minimum

Metal vs wood? Each have pros and cons