You know what is better than 2 stackers, 3 stackers we did have 5 in all but then the oldest flew the nest. Technically the middle child is home during University breaks but pretty has flown the nest too. It is awesome to have someone in your household to trade with. I have made a few trades with my kids here and there. I will be sad when it is just my husband and I cause in reality ours in ours not his or hers. I won't have anyone to trade with in house anymore.