I've named a number of clones and introduced them to various people over the years, having grown thousands of cacti from seed. I've also given cuttings away of plants I did not name.
My opinion is that clones are rarely stronger than random plants of the same species they represent. In the case of hybrids they also tend to be intermediate of their parents, though exceptions are known.
Basically any named bridgesii tends to be about as good as any unnamed bridgesii. Sometimes a clone is selected not because it is stronger than the species normally is, but because it grows thicker than the species normally does, or faster.
A friend of mine reported eating a large piece of PC pachanoi that had sat out for a very long time and turned yellow. He ate it, not just a brew but chewed and swallowed it down. I think he said it was one of the stronger experiences he has had and he has had many. He is technically a member here but I don't think it is in his best interest to come forward and say he has done this. I respect his privacy but the experience he reported to me was interesting because it was a case of a clone known for being weak producing a very strong response. Evidently leaving a few feet of PC in the Sun for a long time and then eating it entire can produce amazing results.
Are there specific clones you want thoughts and opinions about?