Angelle baby plum tomato

Having saved some seed of what was a very nice tomato called Angelle on the supermarket packet, I bought some more from the same shop, still called Angelle, and they are totally different. I have a feeling Angelle is a generic name to keep the punters happy. The new packet is nothing like the old, bigger plums and not so sweet. Glad I saved the seed, but have no idea what it is!