I was only there for a day and the expo at the time was pretty small but was just as crowded as last years cannabis cup expo. At every booth they had dabber rigs setup from bongs to vaporizers and all sorts of concentrates to dab for FREE. good times were had
Dont remeber the names of the concentrates I dabbed but they were all top shelf.
If oil isnt your thing..
the ganja scene is VERY friendly too! lots of of top shelf herb floating around Denver