As has already been mentioned, the price (excluding Geneon's thinpaks, which are on the more expensive side) and the space-saving properties of thinpaks are all to the good, and personally I've never had a problem with the discs coming loose, if anything I've had a job getting them out. I don't really care about the lack of on-disc extras, although I have to admit insert booklets can be useful for background info or translation notes on some series (Azumanga, Aquarian Age and Sakura Wars TV, for example).