I use the 3D Pro as well. It has many features that are not enabled until you get the proprietary software.
Here is a link to Logitech's own download page for it:
http://support.logitech.com/product/extreme-3d-pro#download
I have an old and worn stick. The software allows me to set dead zones and at the same time adjust sensitivity, as well as set individual profiles. This is way better than setting dead zones in game, as those merely subtract a set value to the measured input. In non tech talk: Setting dead zones in game, currently keeps your ship from turning as hard as it can. I don't know if this goes for all sticks, but certainly with this one.
Having the software also enables macros for any button on the stick, as well as reassigning any functionality you would like to.
A couple of words of Warning, though:
- The software profiles are slow to engage. Since I only play ED by stick, I have set the profile I have made to always active. Setting it as anything else, at least with Win 7, causes difficulties engaging the settings.
- Remember that if you set dead zones in the app, you should also increase sensitivity, or you will still lose agility.
- If you decrease sensitivity, you also lose agility: Your maximum potential turn rate is diminished.
- The app unfortunately does not provide a readout while setting dead zones and sensitivity. Luckily, it task swaps well, as does Elite. A bit annoying, but I did manage to find my "perfect" settings at last.
I hope this helps.