After my recent boost cycle I met with my FS and we went throught which egg did what and ended up where. There really was no ryhme or reason to how they progressed. Eg. one egg fertilised and divided quickly and well, but failed to make it to blastocyst stage, whilst there were others that were slow off the mark but turned out to be good blasties etc.

My clinic has just hired a new embryologist and my FS is keen to look at this, but I don't know, going from my results, if it's that easy to tell which eggs will do what.