http://chennai.burrp.com is much better - and tripadvisor has some reviews
Besides Tuscana and Dakshin (good choices) you can look at -
1. Azulia (Mediterranean) and Copper Point (South Indian) at the GRT Grand in T.Nagar
2. Great Kabab Factory at the Radisson (out by the Airport)
3. Kumarakom (a chain, mid-priced), or Ente Keralam (a bit more expensive) for Kerala coastal style food (seafood mostly)
4. Kokum (food from all over India's coasts not just Kerala) - another chain
5. In Seoul (TTK Road) - Korean
6. Akasaka (Japanese) .. tiruvanmiyur I think
There's a few others around but these should do for a start.
PM me when you next land in MAA - we can set up a FT mini do again