How do you sleeve your commanders?

What do you guys use to sleeve/differentiate your commanders from the rest of the deck?

I’ve tried using a different colored sleeve, putting the commander in a top loader, and using those slide cases from gamegenic. The slide cases are alright. They can be tricky to use and sometimes the plastic case doesn’t slide closed right and scratches itself. Top loaders don’t fit into most deck boxes, and I wanted something sturdier for the commander than just the standard sleeve. I’m curious to know what you guys recommend.