Darbar on Polk and Bush is the BEST Indian restaurant delivery in San Francisco. I am a big fan of Indian food and have tried a good portion of the restaurants in the city and nothing compares to the wonderful flavors of Darbar or the value. As most restaurants charge $9.99 or more for your basic Chicken Korma Curry dish, Darbar only charges $6.99. Yah!
Darbar has some of the fastest delivery in the city. Although they tell you 45 minutes on the phone, it usually arrives in about 20-25 minutes. Not only are they prompt, the delivery persons are super nice and have never forgot anything, not a dipping sauce or even a napkin. Darbar does have a bit of a trick to get the lower prices when ordering their food for delivery. If you call and order, you get the in-restaurant menu prices, example: Chicken Tikka Masala for $6.99 and Vegi Samosas $1.99 but if you order via their website it costs $9.99 and $2.99 respectively. But if you use http://www.foodyoyo.com/ to place your order (and not the company they use thru their official website) you still get the banging Tikka Masala for $6.99. It's best to order via the phone to lock down the good prices plus if you order $30 or more for delivery you get a free appetizer or dessert for saying you found them on Yelp.
My favorite main dishes that have never disappointed are: Chicken Tikka Masala (a classic), Chicken Makhani (delicious butter cream sauce), Chicken Vindaloo (spicy spicy spicy!) and Chicken Korma (yummy coconut based cream sauce). I always order the garlic and plain nan and the two types of samosas, vegi and lamb. I seldom branch out of these fine dishes but I can say they are always spot on thus the other dishes must be too!