Suggest some best place to have South Indian food.

Yesterday on Sunday I went to MTR near Cubbon Park for dosas as I heard a lot about that. I was so disappointed by the taste. Beside that their price menu is quite high...!

So far, the best I have ever seen is Filtered Coffee in Brookfield. The taste is so awesome...!. Apart from this Varalakshmi Tiffins in Brookfield is also a good one.

Can someone suggest some more places for the south indian authentic food ?