I use both honey and agave, depending on the purpose. I love agave because it's extremely environmentally friendly.
We're probably not going to eat enough honey to gain much nutritional benefit. I've read that the darker the honey the greater the nutritional value. Buckwheat honey is very dark and has the highest amount of antioxidants. Darker honeys taste stronger, though, sometimes similar to molasses. Sometimes I'll add a squirt of buckwheat honey to my tea.
Here's a good article on buckwheat honey
http://www.gipsonsgolden.com/fehoofmo.html
I'm not sure if that was what you were looking for