I would put in two - but I am biased based on my own experience. I was a poor responder - never had 2 embryos when I cycled with my own eggs but had I, the 2 would have gone in. The odds of them both being healthy at 40+ years of age was slim to none and being 38 and facing the possibility of early menopause means time is of the essence. Also, assuming you have 2 embryos, they really don't know which one is the "better" one. They do grade them, but the grading doesn't necessarily guarantee that one embryo is better than the other in the long run.

Of course, if you put in 2 you have to be willing to have 2 - so I guess I would say, if you are strongly opposed to twins, then don't put in 2 but if it is something you could accept, then I'd transfer 2. If you have any other issues that may be of concern in terms of carry twins, I'd discuss this with the doctor as this would also impact my decision. This probably wasn't all that helpful...sorry.