Years ago I used Werkstatt sealant a lot. I forgot the name but I think at some point it was changed to "Trigger" something or other. Back then there was no reason to use any other medium duty polish - there was AIO and that was all I ever needed. I followed that with either the Werkstatt or the Klasse Sealant Glaze. Even to this day I don't think you can beat AIO, although I have heard the formula may not be quite the same today as when I used it. It is just that there are so many others to choose from these days.
DG105 is great too. Which is the better performer? Which gives the better look? The better application? The better value? Everything is subjective and relative to many factors. Which is "better" is hard to say. It is much easier to say that both will perform well for you as a mild prep for your LSP. In fact, they aren't too shabby as stand alone products themselves!