I'm a noob but I say flower your baby's momma and the weaker looking clones, but keep the best of the batch. Who says that your babies momma is stronger then her babies? Is she the best looking plant you have ever seen? Did she show super vigorous growth? Then why let her be your babies momma...??? Put that biatch in the box and smoke her skanky ass after she give syou all she has to give... lol
One of her babies might be a better specimen to become you new mother, and so on...
I was contemplating the same idea as I was checking my clones today; I though, why should I keep this plant as the mother? She is a female for sure, she is already maturing, she is a decent size/girth, and she is already acustom to nutes in the 1000 ppm range. So, I think I will take one more batch of clones before I send her to flower and choose the best of the two batches to be her replacement. I don't want to keep cloning from clones because I don't know how many generations she could be on already, I was gifted her from a cutting.
Before I do this, I will compare her to her less mature cuttings... lol