Hurray you got to mix it up!

Glad you found something you like. Body? IDK what others call it, but I call body the density of my eliquid. Kinda like my hair is thicker and fluffier when I put an extra-body cream rinse on it, lol. I would say EM adds sweetness and definition. But I may be wrong here and may be learning some new (to me) vaping jargon.
EM is sold in crystals OR in a solution from TFA. In the solution, it's called Cotton Candy - the regular one, not the Circus Cotton Candy. Definitely buy something larger than that cute little teensy sample vial - you'll be using it often if you like to sweeten a lot of your juices.