I have been impressed with how quickly this grill and griddle heats up. It takes mine around 4 minutes to get up to 350⁰. I've used both butter and unbuttered bread for toasted cheese sandwiches and both brown nicely.  
The grill works well for both meats and veggies and lets those neat grill lines on your foods. 
This grill and griddle is lightweight and easily stored when not in use.  
I now own 5 Ninja products and I love them all!