wow what wonderful responses.
you see the reason I asked the question was that DH has said that if you want another get one. Tia is 18 mths old and my world. although she has lots of play friends I work part time and dont want her to be lonely.I agree with all the reasons you guys have given but my top two would be great travel buddy and such a laid back little girl and I don't want to upset the chemistry.
Oh well , time will tell lol