So, I am a secret (or not so secret) fan of Fuddrucker's - and rarely find a burger that compares. Indulge comes very close and it has a great atmosphere. I love the burgers (natural beef), buns, fries and chocolate shake. This is a fun place to come. Also, since I am so picky, I love that you build your own burger and meal. The only negative thing I have to say is that the restaurant, although cute and trendy, is sometimes dirty. We've been sat by the bathroom, which smelled, and other times there has been a lot of mess on the floor.
Update - I have since heard that Indulge is one of the only restaurants in Scottsdale with 100% health dept rating. So - it is clean! Just went back and had a delicious burger.