I think that PICSI is a sort of ICSI where the sperm are screened in some way before being injected.

The cycle "success" rate depends most of all on the number of eggs that fertilize, which is a strong function of age. And with PGD for a genetic condition, some of those embryos won't make it to biopsy; some may have the genetic disorder; some may not survive biopsy.

Once you have a "good" embryo, the chances of it making it to heartbeat stage (if there are no other issues) are around 40%, pretty much regardless of maternal age.