Paige and Alicia,
Thanks for your views....both of which make perfect sense. If I was a really optimistic person, I guess I could look at it as either choice having plenty of potential to work but, after a few years of dealing with infertility, my reserves of optimism are running very low. I find myself just dwelling on every possible thing that could go wrong! I'm sure you can both relate to that.
This sounds stupid to say from someone who wants a child so badly but I'm very fearful of multiples. At the same time, I don't want to let that fear make me so conservative that I minimize my chances of having one. I know DH will push for me to put 3 (or even 4

) back if that many were to actually make it and I would probably feel compelled to go along with him since I don't feel like we can reasonably afford to discard potentially viable embryos. I also know he is not that afraid of the idea of twins whereas I am (I guess it's the reverse situation of most couples).
I'm kind of annoyed with my clinic for a lot of things at this point. For one, as you pointed out Alicia, most clinics seem to freeze the embryos in the smallest divisions possible. I think they should have frozen the 4 as 2/2.
Paige, you asked about refreezing. Well, that is another thing I'm not happy about. They won't refreeze. I know refreezing is possible since I've read of many other clinics doing it. In addition, I still don't understand why they can't thaw the other batch for me same day and just do that transfer without going to blast if none of the first batch make it. I could swear I've read of other clinics using one straw first then moving on to the next one(s) as needed to get enough for the transfer. I just can't believe I will have to do an entirely new cycle. I suppose these are all things I should have looked into before using this clinic but I really didn't have options since it is the only one within reasonable driving distance.
Anyway, I'm sort of leaning of going with the 4 at this point so as to give myself the best odds first. I have to think it would be pretty unlikely for all 4 to survive the thaw and make it to blast....especially since they were developing more slowly than average to begin with. I also can't stand the thought of getting a phone call Friday morning telling me there won't be a transfer. Knowing me, I'll probably change my mind several more times before the weekend is over though.

I'd actually be quite happy with one good blast so maybe the 3 would suffice (see? Changing my mind already!)
Thanks again to both of you. I really can't talk with DH about this anymore as he is too frustrated with my indecision at this point!
Staci