From my experience, food at the Usha is always superb and some of the best Indian cuisine I've tasted. I usually order the specials which, despite being slightly more expensive, are worth the money.
Table service can vary greatly though - some nights its flawless but on another visit, may be pretty poor and you'll need to grab some of the table staff for drinks etc.
Overall its a great Indian restaurant with excellent chefs. Just don't expect a waiter to be checking on you every 10 minutes.
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