The 8P0 035 192 A is supposed to have the 0330 software installed (2006 model year), the 8P0 035 192 F is supposed to be the HIGH version which supports additional voice commands. But I have seen those part numbers only once and I'm not certain if they are correct.
In any case, without additional hardware you will not be able to use the additional features of the HIGH version. Therefore I would recommend to go with the plain old 8P0 035 192 (no letter). If you are in Europe you can upgrade the software with the 2005.1 or 2005.2 DVD to 0330/0360 and get most of the additional feature the newer units have.