Here's some information:
*I don't want to spend more than $100 (including shipping if possible)
*they are expensive in Japan -- buying them abroad can be worse with the cost of shipping
*however, will be meeting a family member coming from Canada next month and could have an item shipped to that person's house so they could bring it to us in their carry-on baggage
*a small screen size (7") is fine because it is for travel, while at home can be hooked up to a TV
*battery life is important - would like 4 hours or more if possible or else be able to use an extra battery
If anyone has experience with these portable players, I appreciate any suggestions.