If you're looking for an affordable option you might want check out The Pho King at Champa Gali. They're decently prized and have a pretty ambience
Why not sign up for Zomato gold or any other dining subscription.
Fio in garden of 5 senses.
En , japanese restaurant Mehrauli are some great deals under 5k
You should try Dontellmama in South Ex. They even have Salsa nights every week!