I think E位 training is better for the child who did not have any training before.
I位 is more suitable for the children who have mild delay or just like my boy who attended S位 and now back to normal school with more special care.
E位 actually is much more個別training than I 位。
只係要考慮到小朋友要兩邊走嘅問題。
你嘅情况, delay1年, E位or位似乎啱啲!