DS Organize has many more features, and is (generally speaking) a much better choice right now. However, PdaDS is more convenient to access and allows you to return to the G6 Real menu without turning the DS off. So use DS Organize for now, and keep watching to see if PdaDS improves in the next couple of iterations...
(With a little bit of work, PdaDS could become a key selling point for the G6 Real. Unfortunately, it's not there yet!)