This third Tokyo branch of the excellent South Indian restaurant chain is quite a bit fancier than the first two - there are booths and real dining tables as well as counter seats, and the inexpensive multi-curry sets are supplemented by garden salads, mixed-grill platters and eight different dosas on the big a la carte menu.
There are still some very budget-friendly options though, including a special menu for lone diners sitting at the counter, which offers various multi-part South Indian "meals" and curry platters in the Y1250-1500 range. Two different five-curry samplers - they come in both spicy and mild versions - are very satisfying and are a good deal at just Y1280.
There are lots of daily specials as well, and reasonably priced party plans. Budget around Y1500-2500 at dinnertime, and Y1000 for lunch.
This book will introduce you to more than twenty of Japan's favorite specialty foods that are less well known abroad, along with a guide to the best places in Tokyo to try them and expert tips on what to order. From Bento.com.