Dear Bob, we have a lot of so called Heritage tomatos in the UK. Gardeners delight is one of them and is a delight. Although classified as a large cherry bite sized tomato, if grown well they are fantastic.
We grow them and a lot of others simply because any chef will tell you adding different tomatos at the same time to a dish is essential. Each tomato apart from supermarkets or Dutch tomatos as we call them which are tasteless, has; a different sweetness and acidity, therefore they all add to a remarkable taste when used for making amazing food.
Regards from England.
Neil.