Personally I stick to the plain old devil's lettuce. Vaporizing pipe tobacco can be enjoyable if it's flavored, but yeah I don't bother trying many other herbs lol.
The fun part is the leftovers - unlike smoking you can re-use your leftovers from the dry vaporizer (I call it ABV - Already Been Vaped, others call it AVB - already vaped bud). It's already cooked so you can eat it straight (some people add it to yogurt, others mix it into smoothies or chocolate milk, some make "firecrackers" with crackers and peanutbutter/jelly for example) - the results tend to be more sedative than usual.
I personally have used a sous-vide to make budder using cooked herb which set up in silicone molds. I then make rice krispy treats using the budder.