[KarenO]

Agree on all points. It's easy to see just from the lack of response here that there is a dearth of determinate tomatoes known for their good flavour. Agree that determinate breeding has generally focused on either earliness alone or commercial interests: mechanized harvest, disease resistance and concentrated fruit set which are all good qualities certainly but the breeders were not concerned with flavour.
I think it can be done though. Flavour needs to be the main focus of the breeding project which it generally isn't when commercial breeders are doing it. It is the primary focus of my own small projects.
KarenO
I should qualify that to say North American breeders because I agree there are some excellent flavoured Russian determinate heirlooms and even some commercial tomatoes. Chernomor (Black Sea man) is another good example.