I get mine from Soundsource in Los Angeles - it's the highest quality I've found.
They also sell the rounded (at the bottom) Japanese innersleeves, which do the job very well - and cost a lot less than the MoFi innersleeves.
http://soundsourcecds.com/catalog/product_info.php?products_id=83
They also sell the rounded (at the bottom) Japanese innersleeves, which do the job very well - and cost a lot less than the MoFi innersleeves.
http://soundsourcecds.com/catalog/product_info.php?products_id=83