Hedge vs Unhedge

Hi, can someone do a breakdown of hedge vs unhedge? I am a little confused. I am new to this, so pls explain in simple terms

Let's say I am a Canadian investor looking to buy a US stock. Say, I want X American stock, and now brings the topic of hedging vs unhedging.

I hear people say they'd like to keep it solely CAD due to simplicity, but wouldn't it be a good idea to expose yourself to different forgein currencies? Hedging is of course more expensive but Canada's market isn't big compared to US and others.

Or I hear you can simply convert it to CAD using a method called "gambit" in QT or others.

I am really confused about this. Which one should you do?

1. Conver to CAD and buy US stock

2. Buy US stock and choose unhedging

Is there a difference between 1 or 2?

Again: I am new to this, please explain in simple terms