The Fisher Price Deluxe Jumperoo was by far the best buy my husband and I made for our son! He started using it when he was about 4 months old, and used it daily until he was 10 months old. My son fought sleep in a TERRIBLE way, but with the Jumperoo, he would sit in it and play and obviously jump; watching Baby Einstein for 20 minutes and fall asleep! It was amazing! It strengthened his leg muscles and kept him entertained and gave me time as a busy mom to get some cleaning and cooking done. The only down side to the jumperoo was it was a bit of a hastle to take down and put back up, and its a...