I use DS on a regular basis and love it. It took some time to master it, but Nifield was more than happy to help always. DS has made my submitting faster, easier, and way more convienent. I made my own database from scratch so I couldn't really tell you about the ones provided, but I love DS and will be using it as long as I submit
I would take the time to develop a killer database and for sure you will fall in love with this submitter.