I could have South Asian cuisine for dinner most evenings, and Tooting boasts two great Pakistani restaurants, situated across the road from each other, to ensure that you never get tired of going to the same place.
My comments about Lahore Karahi pretty much all apply to Dawat, with regards to affordability, portion sizes and the no-frills dining experience. However, of the two, I think Dawat just edges it, because, from my two visits to Dawat, I felt their ingredients were fresher. See the photo below:

