I was looking forward to using this on our first trip this season, but ended up being disappointed in the product. 
*It doesn't heat evenly so you have to repeatedly rotate food around the grill. 
*Biggest regret - This model doesn't come with a hood, which was ok because we figured we would buy the hood attachment later on if we felt we needed to. Well, the back grease drip model isn't compatible with a hood, so we are out of luck. The hood, I realize, is indeed necessary, so now we are stuck with a griddle that can't do a number of things - steam, retain heat, etc.
Other than these two issues, it is a fair model. It cooks decent burgers, eggs and pancakes. We bought the 17 inch because of the size for two ppl. I regret not researching more regarding the hood.
My advice -  be sure to purchase the model with the hood/compatible model, regardless of the size.