Indian Accent at Lodhi (a bit overrated but good food).

Havemore or Gulati, both at Pandara Road (the butter chicken at both places is a must).

Al Jawahar near Jama Masjid (no real ambiance but amazing food).

Rajinder Da Dhaba at Safdarjung Enclave (they have a small sitting area but I have always done take out here).

These would be at the top of my list.