I've never had a satisfactory eating experience in Ronda. Everything I've tried there has been of poor quality and overpriced.
in Cordoba, a good place for tapas, at least the last time I was there, was Meson Plateros.
In Seville, I like Pepe Hillo on calle Adriano, and Cerveceria la Giralda, near the Cathedral. It is in a very touristy area but it is one of the better tapas bars in a part of Seville full of expensive eats. I also really like the area around Alameda de Hercules for tapas, loads of good local places around there and away from the usual tourist hordes.