i've heard of Rett's girls being able to use them, and i know a few Rett's mums that have bought them one, i've read that some of them have responded really well to it
a friend of mine has just got daughter one for her birthday and has invited us up to go have a play with it to see if lily-ann would be able to use one/like it...we're thinking of getting her one either for her next birthday or xmas as 3 seems a teensy bit small still...and they're so expensive it gives us time to save! lol
thanks for the link chick...i like having all of the websites i can find for information xx