I like having the parents listed because this is one way I know if a plant is pod/pollen fertile. I also look to see what babies it has produces to see if I'm interested in making crosses myself.
I would buy and do buy plants that aren't known. I've lost tags, it's a pain but I'll usually grow the seed if it's a big plump seed. I'm sorry, I just can't help thinking that might be "THE ONE".
Blessings, Mona