I bought this model about 6 months ago and have enjoyed using it.  I'm thinking some of the bad reviews below are either from damages during shipping or people that don't know how to use a griddle.

Positives -  High heat, portable, having a grill and griddle combo provides multiple options (I purchased another griddle insert from a different company and swap out the grilling grates to have two separate griddles at different temperatures).  This is fun to use and my kids and I enjoy making smash burgers.  Also a great way to cook up bacon without making a mess in the kitchen.

Opportunities - I have read where others have swapped out the wheels and wider wheels would be nice, it is heavy,  but the main issue for mine is the locking mechanism is wonky.