The only format I've not had a problem with is the U3D format, Adobe's native 3D format.  The imports from Poser have been terrible, and when I've tried other .objs from other programs I've not had much luck either.  You might want to download the free Daz Studio, which I believe allows you to import objs and then try exporting in U3D. 

There's a new update for Photoshop, perhaps that will help.