The Scottsdale Quarter is grown and has really become a happening place.   We got to PrimeBar early enough on Saturday that we were seated immediately in the rear bar.  Nice atmosphere and plenty of room.  Beer and wine selection was good, a lot of local stuff which I appreciate.   We split the prime rib sliders and the PrimeBar burger.  Burger was great (huge) and well put together.  Sliders definitely left room for improvement.   The meat was so minimal it was basically bread and some horseradish.    Service was good, food and drinks came out quick.   We'll try it again, the burger showed promise but we'll just avoid the sliders.