How many tracks are on your copy of "Duck Stab"?
Because if it's 14, that's the album version, though it's still only about 1/2 an hour long. The original EP release was have the length/# of tracks but was combined w/ the stylistically similar but unreleased "Buster & Glenn" EP from the same period and initially called "Duck Stab/Buster & Glen" but eventually just shortened to "Duck Stab". Anyway, if you don't have the "Buster" tracks, definitely grab them (just as good as the "Duck Stab" tracks if not better) and if you *do* already have them, I'd recommend checking out the "Diskomo" and "Intermission" EPs next- both similarly "accessible" and highly regarded. There's also "The Commercial Album", which is the closest to "Duck/Buster" in terms of style but features 40 songs that are exactly 1 minute long each.