Powdered and Liquid Pectin are not all the same. There are differences between them in the amount to add to a recipe, quantity of sugar, and the possibility of adding additional ingredients. Here is a "cheat sheet" and table to figure it all out!
I am finding that the simplest of flavors such as wines are really quite good in shifting a fruit jam or preserve into a great batch that has some depth. Just as in cooking only use wines that you would drink and enjoy in a glass by themselves.