well, they are generally worth it if you dont have the dvd versions since they are all basically upconverted dvds. But if you have dvd versions, just stick with those.
The first and best of the lucky star series
decent story line and theme song
also the awesome and quite cringe worthy action set where Jackie Chan kicks someone through a glass window
I still have the HKL version on DVD with special features and Bey Logan commentary
A must own