This is the most promising article I've read on the subject. The only thing that puts me off from donated penises, personally, is the need to take immunosuppressants to prevent your body from rejecting it. I don't think I could take that degree of emotional trauma to have a penis and then lose it. I really hope that medical science will advance enough in my lifetime for them to create them from stem cells, 3D print or what have you, but I may just settle for phalloplasty in the mean time.