I'd like to try agave nectar some day. What I have been doing is cutting up to half of the sugar that is called for in a recipe. One of the chocolate chip cookie recipes I make calls for 1 cup of white sugar and 1 cup of brown, packed. I use 1/2 cup of each and the brown sugar isn't packed. They are still on the sweet side - next time I'm cutting a bit more of the white - it takes some experimenting to find the appropriate sweetness and texture!
There seems a magic in the very name of Christmas ~ Charles Dickens