Such a hard and personal decision, though I think MummyNaomi summed it up for me/us - we plan on donating ours to research. I feel a little selfish for saying it, but I just couldn't donate them to another couple, to me that would be like adopting out our 'living' children. At least by donating them to research I could feel like we are contributing to ease someone else's pain, albeit indirectly.

Good luck making your decision xx