Is spice better than weed?

My friend started using spice but i don't really know much about spice.I know its a cannabinoid but i've never used them before. What's its benefits and disadvantages compared to weed?Would you recommend i start using it instead of smoking weed?

Edit:A few people have been saying no but i'd like an explanation as to why it's so bad aswell.I'm really curious as to why.