If you like to cook on a griddle it is a fantastik unit.
Way more efficient, holds the heat better than using Weber Q with griddle surface.
Can't beat it for breakfast food.
Keep in mind it's a griddle not a grill. With that in mind I enjoy the 17" Blackstone, but I'm not ready to get rid of my Weber Q.
I consider them 2 different devices. Yes both are used for cooking outside.
But the end results are different.
There are foods meant to be grilled and foods that are better on the griddle.
Choose your weapon, I enjoy using both.
The Blackstone is a great unit if you like to griddle, but I don't consider it a substitute for the grill (Weber Q )