Simon,

Here is the link to the site I order Agave Syrup from. It has a very light and sweet taste. I think somebody else mentioned turbino sugar, which you can find in most local supermarkets. As far as the Piloncillo goes, I do know some area Mexicans (Migrants, etc.) who carry it to the field in a plastic sack. They shave it into their coffee, just like regular sugar. I am not kidding as I have actually seen them do this.

Take care,
Stargazer