I have imported most of hem, and does not translate them because I learn much japanese because of them, reading too. For me it's a great way learning japanese. I would recommend playing them as they re. But to learn japanese by hearing to soon learn to read maybe it's better to have them translated first or see loads of non dubbed anime first which has subs in english. If you visit or import from Hong Kong and buy the "asian" versions, is that a good idea without having to mood anything because the "asian" versions have japanese, chinese and english subs naturally. So I'll recomend that.