The one shown on Widerner's site is the Century imported/converted PAP I was talking about.
The word is that Zastava was told by Century and other importers that the slant-cut receiver and single-stack trunnion were not selling well in the US, and that they needed to change them, "or else." As far as I know they still come in with a single-stack receiver before conversion, similar to Romanian imports.
The PAP to avoid is the one that looks like this:
My main complaint is still lack of a chrome-lined barrel. IMO this is a must-have on an AK, if you only plan to own one or two of them. A CL barrel will have a much longer lifespan, even in a semi-auto rifle. For an out of the box AK, I would rather buy a WASR or spend the extra cash on an SGL-21 in order to get a hammer-forged CL barrel. There are also several kit guns available now with US-made CL barrels, but I don't have much experience on the quality of those barrels. Factory-built guns such as the WASR, SGL, or the PAP (if you don't mind the barrel) are generally preferable over kit-built guns.