However, it is more than adequate to handle the dozen or so SDLPPX files I've been given to translate myself so far. Most of my clients do not use very many of the features in SDL Trados Studio, so typically files to translate and a translation memory are all they try to send to me. If there is more, I can always use my licensed copy of the SDL software as an intermediate stage.
However, once a project package has been imported to memoQ and translated, there is sometimes trouble with the return package. Typically, some files in a multi-file project are "forgotton".
To include all files in the SDL Trados Studio return package, you must select all of them, and then click Export (stored path). This will create the SDLRPX file in the same folder from which you imported the SDLPPX file. Only selected files will be included in the package.
The other option for exporting project files is Export (dialog). This will export individual SDLXLIFF files for the translation documents in the memoQ project.
Here is a short video on YouTube showing this process: