Mandarin Chateau is definitely the best place in Chinatown.
970 N. Broadway, #114
I also like Pattys. I take it home and bake it--it's $1 cheaper and you get it super fresh. My favorite is the spinach jubilee. It's EXCELLENT.
I also pick up pizza sometimes from Spumoni, it's okay, but all things considered I'd go to Pattys. I live at 19th and Montana, so I've checked out all of the local joints near your location.