My goodness! I used an extra dry vermouth but a lower-end Corazon reposado and with the sugar syrup this turned out really, really sweet, but with a delicious profile. I didn't have a lime handy to express and I am sorely disappointed, because that little hint might have kicked this into the next level for me. Fantastic!

This is really nice! It really lets the tequilla shine, and the vermouth and touch of sweetness both enhance it, and round it out. I added a touch of salt also, just for fun.