So far I've struggled with presets, but with this package Anskar and Lea explain exactly what is important and how their presets help you to find your own editing style.
The masking tools in particular were a real game changer for me, because they tease that certain something out of my pictures and have given me a better understanding how to separte the important from the unimportant picture elements.
For me, the preset package is a real enrichment and it spurs me on to work more with presets myself and to continue working on my own style.