Concerning Sushi in L.A., my vote has to go to Sushi Zo and n/Naka. I loved Mori in its prime, but since Mr. Mori left it just hasn't been the same.
Though if you have less then $50 and what some amazing sushi, Hide on Sawtelle all the way.
Not to detract from the dining part of this thread, but want to highlight you can get a lot of shopping done now in DTLA. Kapsoul, Lab3, Wander Boutique, Suburban Riot (opening Spring), Pria Boutique, Buttons & Bows, you name it, all found within a 2 block area in the historic core of DTLA. Come check out the little guys when you guys get the chance!
Yeah! Go Downtown! Within the next ten years, Downtown L.A. will be the new center of Los Angeles fashion. No other place in the city allows designers to manufacture and sell their product in the same building.