I have had the grilling hub for a few months now and love it.  It is easy to use and set up.
My first use was with two full briskets, that I had to start on the smoker at 9pm so we could eat dinner the next day.  It worked great and meant I didn't have to stay up all night tending the temp.  There is on issue that I don't like.  On the pre-programed items, you cannot change the weight of the meat.  This really only affects the time calculations but it would be nice if you could adjust the weight.  The alternative is to do a temperature range.