quick question, between these two movies are there any differences in the latter that would make the first clerks still worth buying? or should I just wait for Clerks X?

the only thing that you will be missing from the ce is the option to view the deleted scenes seperatly. (for x, they will only be able to be seen in the sundance cut). the theatrical cut will also have 5.1 remixed sound (from a review on newsaskew.com, they stated that many of the sound effects have been enhanced, and that the music is more punchyer. (also, the sundance cut has different music as well.)