i'd have to agree with you there Pret-a-3D although i have gotten a couple things that say not tested in daz studio they also didn't have poser procedural materials on them but they had textures for the texture and they work pretty well in daz.  the two main things to look for with that is poser procedrual materials or poser dynamic both of those do not work in studio at all.

sometimes you have to play with the bump or displacement maps a hair but that's not too bad a thing to mess with but with both studio and poser alot of creators seem to think it's fine to change the folder layout from what they save the creation  as on their maching after they save it and it passes so that really creates problems with "missing" parts of created content really bites crap to have to hunt for either textures or even the .obj because the creator changed the packaging after it passed testing or the testers changed it up