Which country would you choose for international adoption?

I am considering international adoption as our next step to grow our family. We already have 2 children 4 and 1. I am looking into Lithuania, Russia, and Ukraine as our options at this time. The length of time the process takes isn't really an problem at this point and time considering we would like a child that is younger then our current children and we are wanting to wait until my 1 year old is in kindergarten and we would need to raise funds. From any of your experiences which country can you get a healthy child between infant and 4 or 5 years old? I have heard stories about Ukraine and them pushing the severe special needs children on Americans once they come to the country, considering they don't give referals until you have completed most of the adoption process and are in their country and feel like you have to take this child or you will leave empty handed, but I know that all of the adoptions in the Ukraine cannot be like that. I am potentially looking into a sibling group of no more than 2 children and if at all possible a boy and a girl still within the 0-5 yr age bracket. Any advice is helpful as I am in the very beginning stages of this life changing process!!!