I have a Bernina 200E..so have the embroidery module just like yours (well..basically). I brought it home and immediately determined that I had to have software if for nothing else...to convert files from the internet to the ART file format so I could use them.
Not being too sure how much I would actually use it...I couldn't see shelling out the $2500.or so for the Bernina software (although it is really nice)....I bought software from OESD..Explorations software. You can start with the basic package for about $250...then you can add to it if you feel you need or want it. You can check it out on the OESD website.
Good luck..you will enjoy it!