I have that ball and Bella loves it....husband not so much
The only problem I find with Bella is she becomes obsessed over her toys. She won't play with them alone and she would if I let her go at all day long. Not eat or anything. Also I find when she gets in that frenzy she won't even let me know she has to go out to potty...she'll just do it on the fly. I have now started scheduled play time and it seems to be working much better