I use ORDA, don't have any experience with those other autodock plugins.
Note that ORDA also has a minimum distance, iirc it's about 50m. I experienced this when I was pretty close to my station and wanted ORDA to do the rest. Suddenly the damned thing goes backwards until it reaches the required distance, then it starts the docking run again.
![WTH](images/smilies/icon_confused.gif)
Also make sure to carry enough RCS fuel...