Does anyone know anything about these? My MIL just told me she is giving ds one for Christmas (will be 9.5mo), and I looked it up. It sounds like it might be okay once he is walking (We have already gently told her that we weren't comfortable with walkers and bouncers because of the hip/pelvis alignment stuff, and she respected that. This is definitely different.) It also sounds like it might have horrible electronic music, but I can pull the batteries easily enough. Has anyone used one? Any thoughts? Sometimes I think that I am looking for reasons to disapprove of the toys my relatives give ds, which is totally dumb, and they are all supportive of AP and non-vax and all that, even if they don't agree.